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-rw-r--r--FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file10_NOT_in_lecture_note_Column_Space.py (renamed from FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file1_Column_Space.py)0
-rwxr-xr-xFSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file1_Axb.py (renamed from FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/Axb.py)0
-rw-r--r--FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file1_Column_Space.gifbin1182328 -> 0 bytes
-rw-r--r--FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file2_CSasImage.py (renamed from FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/CSasImage.py)25
-rw-r--r--FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file3_solution.py (renamed from FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/solution.py)30
-rw-r--r--FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file4_null_space.py (renamed from FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/null_space.py)6
-rw-r--r--FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file5_Row_Space_part_1.py68
-rw-r--r--FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file6_Row_Space_part_2.py (renamed from FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file2_Row_Space.py)0
-rw-r--r--FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file7_Row_space_Orthogonal_Complements.py (renamed from FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/row_space.py)0
-rwxr-xr-xFSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file8_Left_Null_Space.py26
-rw-r--r--FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file9_left_null_space.py186
11 files changed, 312 insertions, 29 deletions
diff --git a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file1_Column_Space.py b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file10_NOT_in_lecture_note_Column_Space.py
index afe4f9a..afe4f9a 100644
--- a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file1_Column_Space.py
+++ b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file10_NOT_in_lecture_note_Column_Space.py
diff --git a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/Axb.py b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file1_Axb.py
index 95d1021..95d1021 100755
--- a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/Axb.py
+++ b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file1_Axb.py
diff --git a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file1_Column_Space.gif b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file1_Column_Space.gif
deleted file mode 100644
index 7d8d2e1..0000000
--- a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file1_Column_Space.gif
+++ /dev/null
Binary files differ
diff --git a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/CSasImage.py b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file2_CSasImage.py
index fbb3291..70547cb 100644
--- a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/CSasImage.py
+++ b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file2_CSasImage.py
@@ -3,30 +3,31 @@ from manimlib.imports import *
class Column_Space(Scene):
def construct(self):
- A = TextMobject(r"$A = $",r"$\left( \begin{array}{c c c} 1 & 2 & 1 \\ 1 & 3 & 1 \\ 2 & 1 & 4 \\ 3 & 2 & 3 \end{array} \right)$")
+ A = TextMobject(r"$A = $",r"$\left( \begin{array}{c c} 1 & 2 \\ 3 & 4 \end{array} \right)$")
A.move_to(2*UP)
A[1].set_color(color = DARK_BLUE)
A.scale(0.75)
- self.play(Write(A),run_time = 1)
+ self.play(Write(A),run_time = 1)
- CS_A = TextMobject(r"Column Space of $A = x_{1}$",r"$\left( \begin{array}{c} 1 \\ 1 \\ 2 \\ 3 \end{array} \right)$",r"$+x_{2}$",r"$ \left( \begin{array}{c} 2 \\ 3 \\ 1 \\ 2 \end{array} \right)$",r"$ + x_{3}$",r"$\left( \begin{array}{c} 1 \\ 1 \\ 4 \\ 3 \end{array} \right)$")
+ CS_A = TextMobject(r"Column Space of $A = x_{1}$",r"$\left( \begin{array}{c} 1 \\ 3 \end{array} \right)$",r"$+x_{2}$",r"$ \left( \begin{array}{c} 2 \\ 4\end{array} \right)$")
CS_A.move_to(1.5*LEFT+1*DOWN)
CS_A[1].set_color(color = DARK_BLUE)
CS_A[3].set_color(color = DARK_BLUE)
- CS_A[5].set_color(color = DARK_BLUE)
CS_A.scale(0.75)
self.play(Write(CS_A),run_time = 2)
- arrow1 = Arrow(start = 1.25*UP,end = 0.25*DOWN+1.75*LEFT)
- arrow2 = Arrow(start = 1.35*UP+0.5*RIGHT,end = 0.25*DOWN+0.5*RIGHT)
- arrow3 = Arrow(start = 1.25*UP+0.75*RIGHT,end = 0.25*DOWN+2.9*RIGHT)
+ arrow1 = Arrow(start = 1.25*UP,end = (0.25*DOWN+1.75*LEFT+0.25*DOWN+1.2*RIGHT)/2)
+ arrow3 = Arrow(start = 1.25*UP+0.75*RIGHT,end = (0.25*DOWN+2.9*RIGHT+0.25*DOWN)/2)
+
+ arrow1.scale(1.5)
+ arrow3.scale(1.5)
Defn = TextMobject("Linear Combination of Columns of Matrix")
Defn.move_to(3*DOWN)
- self.play(Write(Defn), ShowCreation(arrow1), ShowCreation(arrow2), ShowCreation(arrow3),run_time = 1)
+ self.play(Write(Defn), ShowCreation(arrow1), ShowCreation(arrow3),run_time = 1)
self.wait(1)
class solution(LinearTransformationScene):
@@ -43,7 +44,7 @@ class solution(LinearTransformationScene):
self.wait()
self.play(FadeOut(o))
- A = TextMobject(r"Let $A$(= ",r"$\left[\begin{array}{c c} 1 & -1 \\ 1 & -1 \end{array}\right]$",r")denote the matrix the of this linear transformation.")
+ A = TextMobject(r"Let $A$ be ",r"$\left[\begin{array}{c c} 1 & -1 \\ 1 & -1 \end{array}\right]$",r". $A$ denotes the matrix the of this linear transformation.")
A.move_to(2*DOWN)
A.scale(0.75)
A.add_background_rectangle()
@@ -116,8 +117,8 @@ class solution2nd(LinearTransformationScene):
arrow2 = Arrow(start = ORIGIN,end = UP+LEFT)
arrow3 = Arrow(start = ORIGIN,end = 3*UP+4*RIGHT)
arrow1.set_color(YELLOW)
- arrow2.set_color(YELLOW)
- arrow3.set_color(YELLOW)
+ arrow2.set_color(ORANGE)
+ arrow3.set_color(PURPLE)
arrow1.scale(1.3)
arrow2.scale(1.5)
arrow3.scale(1.1)
@@ -135,7 +136,7 @@ class solution2nd(LinearTransformationScene):
self.wait()
self.play(FadeOut(o))
- A = TextMobject(r"Matrix the of this linear transformation is $A$(= ",r"$\left[\begin{array}{c c} 1 & -1 \\ 1 & -1 \end{array}\right]$",r") again.")
+ A = TextMobject(r"Let the matrix the of this linear transformation be $A$ =",r"$\left[\begin{array}{c c} 1 & -1 \\ 1 & -1 \end{array}\right]$",r" again.")
A.move_to(2*DOWN)
A.scale(0.75)
A.add_background_rectangle()
diff --git a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/solution.py b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file3_solution.py
index fb31881..eb310f3 100644
--- a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/solution.py
+++ b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file3_solution.py
@@ -5,16 +5,16 @@ class solution(LinearTransformationScene):
self.setup()
self.wait()
- o = TextMobject(r"This is the original $2D$ vector space(before Linear Transformation)")
- o.move_to(DOWN)
+ o = TextMobject(r"This is the original vector space $R^2$ (before Linear Transformation)")
+ o.move_to(3*DOWN)
o.scale(0.75)
o.add_background_rectangle()
self.play(Write(o))
self.wait()
self.play(FadeOut(o))
- A = TextMobject("Let $A$ denote the matrix the of this linear transformation.")
- A.move_to(DOWN)
+ A = TextMobject(r"Consider the matrix the of this linear transformation $A$ = $\left[\begin{array}{c c} 1 & -1 \\ 1 & -1 \end{array}\right]$")
+ A.move_to(3*DOWN)
A.scale(0.75)
A.add_background_rectangle()
self.play(Write(A))
@@ -23,8 +23,8 @@ class solution(LinearTransformationScene):
self.wait()
self.play(FadeOut(A))
- o = TextMobject(r"This is the transformed vector space i.e. a line ($1D$)")
- o.move_to(DOWN)
+ o = TextMobject(r"This is the transformed vector space")
+ o.move_to(3*DOWN)
o.scale(0.75)
o.add_background_rectangle()
self.play(Write(o))
@@ -32,15 +32,16 @@ class solution(LinearTransformationScene):
self.play(FadeOut(o))
arrow2 = Arrow(start = ORIGIN, end = 2*DOWN+2*LEFT)
- arrow2.set_color(DARK_BLUE)
+ arrow2.set_color(PURPLE)
arrow2.scale(1.2)
self.play(ShowCreation(arrow2))
self.wait()
- o1 = TextMobject("If the vector lies in the transformed vector space")
+ o1 = TextMobject("If the ","vector b"," lies in the transformed vector space")
o2 = TextMobject("(the line) then the solution exist")
- o1.move_to(2*DOWN+2*RIGHT)
- o2.move_to(2.5*DOWN+2*RIGHT)
+ o1.move_to(2.5*DOWN+2*RIGHT)
+ o1[1].set_color(PURPLE)
+ o2.move_to(3*DOWN+2.5*RIGHT)
o1.scale(0.75)
o2.scale(0.75)
o1.add_background_rectangle()
@@ -53,15 +54,16 @@ class solution(LinearTransformationScene):
self.play(FadeOut(arrow2))
arrow1 = Arrow(start = ORIGIN, end = 2*UP+RIGHT)
- arrow1.set_color(DARK_BLUE)
+ arrow1.set_color(ORANGE)
arrow1.scale(1.3)
self.play(ShowCreation(arrow1))
self.wait()
- o1 = TextMobject("If the vector does lies in the transformed")
+ o1 = TextMobject("If the ","vector b"," does lies in the transformed")
o2 = TextMobject("vector space then the does not solution exist")
- o1.move_to(2*DOWN+2*RIGHT)
- o2.move_to(2.5*DOWN+2*RIGHT)
+ o1.move_to(2.5*DOWN+2*RIGHT)
+ o1[1].set_color(ORANGE)
+ o2.move_to(3*DOWN+2.5*RIGHT)
o1.scale(0.75)
o2.scale(0.75)
o1.add_background_rectangle()
diff --git a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/null_space.py b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file4_null_space.py
index c686710..3c52677 100644
--- a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/null_space.py
+++ b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file4_null_space.py
@@ -6,7 +6,7 @@ class null_space(LinearTransformationScene):
self.wait()
o = TextMobject(r"This is the original vector space $R^2$(before Linear Transformation)")
- o.move_to(DOWN)
+ o.move_to(3*DOWN)
o.scale(0.75)
o.add_background_rectangle()
self.play(Write(o))
@@ -64,7 +64,7 @@ class null_space(LinearTransformationScene):
self.add_transformable_mobject(arrow6)
self.add_transformable_mobject(arrow7)
- o1 = TextMobject("Notice, entire set of vectors which belong to the vector")
+ o1 = TextMobject("Notice, entire set of vectors which belongs to the vector")
o2 = TextMobject(r"subspace(Linear Span of $\left(\begin{array}{c} 1 \\ 1 \end{array}\right)$) transforms to zero")
o1.move_to(2*DOWN+2.5*RIGHT)
o2.move_to(2.75*DOWN+2.5*RIGHT)
@@ -83,7 +83,7 @@ class null_space(LinearTransformationScene):
self.play(FadeOut(o1), FadeOut(o2))
o = TextMobject(r"Hence, the vector space formed by linear span of $\left(\begin{array}{c} 1 \\ 1 \end{array}\right)$ is the null space of $A$")
- o.move_to(DOWN)
+ o.move_to(3*DOWN)
o.scale(0.75)
o.add_background_rectangle()
self.play(Write(o))
diff --git a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file5_Row_Space_part_1.py b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file5_Row_Space_part_1.py
new file mode 100644
index 0000000..5259eb4
--- /dev/null
+++ b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file5_Row_Space_part_1.py
@@ -0,0 +1,68 @@
+from manimlib.imports import *
+class LS(Scene):
+ def construct(self):
+ text1 = TextMobject(r"Consider a matrix $A =$")
+ text2 = TextMobject(r"[")
+ text3 = TextMobject(r"$\begin{array}{c c} 1 & -2\end{array}$")
+ text4 = TextMobject(r"$\begin{array}{c c} 1 & -1\end{array}$")
+ text5 = TextMobject(r"]")
+
+ text2.scale(2)
+ text5.scale(2)
+
+ text1.set_color(DARK_BLUE)
+ text2.set_color(DARK_BLUE)
+ text3.set_color(PURPLE)
+ text4.set_color(YELLOW)
+ text5.set_color(DARK_BLUE)
+
+ text1.move_to(3.5*LEFT+3*UP+2*RIGHT)
+ text2.move_to(0.75*LEFT+3*UP+2*RIGHT)
+ text3.move_to(3.25*UP+2*RIGHT)
+ text4.move_to(2.75*UP+2*RIGHT)
+ text5.move_to(0.75*RIGHT+3*UP+2*RIGHT)
+
+ self.play(FadeIn(text1), FadeIn(text2), FadeIn(text3), FadeIn(text4), FadeIn(text5))
+ self.wait()
+
+ ttext1 = TextMobject(r"$A^T =$")
+ ttext2 = TextMobject(r"[")
+ ttext3 = TextMobject(r"$\begin{array}{c} 1 \\ -2\end{array}$")
+ ttext4 = TextMobject(r"$\begin{array}{c} 1 \\ -1\end{array}$")
+ ttext5 = TextMobject(r"]")
+
+ ttext2.scale(2)
+ ttext5.scale(2)
+
+ ttext1.set_color(DARK_BLUE)
+ ttext2.set_color(DARK_BLUE)
+ ttext3.set_color(PURPLE)
+ ttext4.set_color(YELLOW)
+ ttext5.set_color(DARK_BLUE)
+
+ ttext1.move_to(2*LEFT+1.5*UP+2*RIGHT)
+ ttext2.move_to(1*LEFT+1.5*UP+2*RIGHT)
+ ttext3.move_to(0.5*LEFT+1.5*UP+2*RIGHT)
+ ttext4.move_to(0.5*RIGHT+1.5*UP+2*RIGHT)
+ ttext5.move_to(1*RIGHT+1.5*UP+2*RIGHT)
+
+ self.play(FadeIn(ttext1), FadeIn(ttext2), FadeIn(ttext3), FadeIn(ttext4), FadeIn(ttext5))
+
+ rtext = TextMobject(r"Row Space of $A$ = Column Space of $A^T = a_1$",r"$\left[\begin{array}{c} 1 \\ -2\end{array}\right]$",r"$+a_2$",r"$\left[\begin{array}{c} 1 \\ -1\end{array}\right]$")
+ rtext[1].set_color(PURPLE)
+ rtext[3].set_color(YELLOW)
+ rtext.move_to(2*DOWN+1.5*LEFT)
+ rtext.scale(0.75)
+
+ self.play(Write(rtext))
+ self.wait()
+
+ arrow1 = Arrow(start = 1.5*RIGHT+UP, end = 1.25*(DOWN+RIGHT))
+ arrow2 = Arrow(start = 2.5*RIGHT+UP, end = 1.25*DOWN+3.25*RIGHT)
+ arrow1.scale(1.25)
+ arrow2.scale(1.25)
+ arrow1.set_color(PURPLE)
+ arrow2.set_color(YELLOW)
+
+ self.play(ShowCreation(arrow1), ShowCreation(arrow2))
+ self.wait(2)
diff --git a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file2_Row_Space.py b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file6_Row_Space_part_2.py
index b16a32a..b16a32a 100644
--- a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file2_Row_Space.py
+++ b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file6_Row_Space_part_2.py
diff --git a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/row_space.py b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file7_Row_space_Orthogonal_Complements.py
index c81d370..c81d370 100644
--- a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/row_space.py
+++ b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file7_Row_space_Orthogonal_Complements.py
diff --git a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file8_Left_Null_Space.py b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file8_Left_Null_Space.py
new file mode 100755
index 0000000..fd05e75
--- /dev/null
+++ b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file8_Left_Null_Space.py
@@ -0,0 +1,26 @@
+from manimlib.imports import *
+
+class Left_Null_Space(Scene):
+ def construct(self):
+
+ A = TextMobject(r"Left Null Space of A")
+ A.move_to(3*UP)
+ defn = TextMobject(r"It is a vector space that consists of all the solution $x$ to the equation $A^{T}x=0$")
+ defn.move_to(2*UP)
+ defn.scale(0.75)
+ eqn1 = TextMobject(r"$A^{T}x=0 \cdots (i)$")
+ eqn1.move_to(UP)
+ self.play(Write(A), Write(defn), Write(eqn1),run_time=1)
+ statement = TextMobject(r"Taking transpose of eqn $(i)$")
+ eqn = TextMobject(r"$(A^{T}x)^{T}=0$")
+ eqn.move_to(DOWN)
+ eqn2 = TextMobject(r"$x^{T}(A^{T})^{T}=0$")
+ eqn2.move_to(DOWN)
+ eqn3 = TextMobject(r"$x^{T}A=0$")
+ eqn3.move_to(DOWN)
+ self.play(Write(statement),Write(eqn),run_time=1)
+ self.wait(0.5)
+ self.play(Transform(eqn,eqn2),run_time=1)
+ self.wait(0.5)
+ self.play(Transform(eqn,eqn3),run_time=1)
+ self.wait(0.5) \ No newline at end of file
diff --git a/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file9_left_null_space.py b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file9_left_null_space.py
new file mode 100644
index 0000000..61285be
--- /dev/null
+++ b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/file9_left_null_space.py
@@ -0,0 +1,186 @@
+from manimlib.imports import *
+class row_space(LinearTransformationScene):
+ def construct(self):
+
+ self.setup()
+ self.wait()
+
+ o = TextMobject(r"This is the original vector space $R^2$(before Linear Transformation)")
+ o.move_to(DOWN)
+ o.scale(0.75)
+ o.add_background_rectangle()
+ self.play(Write(o))
+ self.wait()
+ self.play(FadeOut(o))
+
+ o1 = TextMobject("Consider a set of vectors which are linear")
+ o2 = TextMobject(r"span of a $\left(\begin{array}{c} 1 \\ 1 \end{array}\right)$i.e. the null space.")
+ o1.move_to(2*DOWN+3*RIGHT)
+ o2.move_to(2.75*DOWN+3*RIGHT)
+ o1.scale(0.7)
+ o2.scale(0.7)
+ o1.add_background_rectangle()
+ o2.add_background_rectangle()
+ self.play(Write(o1))
+ self.play(Write(o2))
+
+ arrow = Arrow(start = ORIGIN, end = UP+RIGHT)
+ arrow.set_color(YELLOW)
+ arrow1 = Arrow(start = ORIGIN, end = 2*(UP+RIGHT))
+ arrow1.set_color(YELLOW)
+ arrow2 = Arrow(start = ORIGIN, end = 3*(UP+RIGHT))
+ arrow2.set_color(YELLOW)
+ arrow3 = Arrow(start = ORIGIN, end = 4*(UP+RIGHT))
+ arrow3.set_color(YELLOW)
+ arrow4 = Arrow(start = ORIGIN, end = DOWN+LEFT)
+ arrow4.set_color(YELLOW)
+ arrow5 = Arrow(start = ORIGIN, end = 2*(DOWN+LEFT))
+ arrow5.set_color(YELLOW)
+ arrow6 = Arrow(start = ORIGIN, end = 3*(DOWN+LEFT))
+ arrow6.set_color(YELLOW)
+ arrow7 = Arrow(start = ORIGIN, end = 4*(DOWN+LEFT))
+ arrow7.set_color(YELLOW)
+
+ arrow.scale(1.5)
+ arrow1.scale(1.2)
+ arrow2.scale(1.15)
+ arrow3.scale(1.1)
+ arrow4.scale(1.5)
+ arrow5.scale(1.2)
+ arrow6.scale(1.15)
+ arrow7.scale(1.1)
+
+ self.play(ShowCreation(arrow),
+ ShowCreation(arrow1),
+ ShowCreation(arrow2),
+ ShowCreation(arrow3),
+ ShowCreation(arrow4),
+ ShowCreation(arrow5),
+ ShowCreation(arrow6),
+ ShowCreation(arrow7),
+ )
+
+ self.wait(2)
+ self.play(FadeOut(o1), FadeOut(o2))
+
+ o1 = TextMobject("Consider a set of vectors which are linear")
+ o2 = TextMobject(r"span of a vector $\left(\begin{array}{c} 1 \\ -1 \end{array}\right)$i.e. the row space.")
+ o1.move_to(2*DOWN+3*RIGHT)
+ o2.move_to(2.75*DOWN+3*RIGHT)
+ o1.scale(0.7)
+ o2.scale(0.7)
+ o1.add_background_rectangle()
+ o2.add_background_rectangle()
+ self.play(Write(o1))
+ self.play(Write(o2))
+
+ rarrow = Arrow(start = ORIGIN, end = -UP+RIGHT)
+ rarrow.set_color(PURPLE)
+ rarrow1 = Arrow(start = ORIGIN, end = 2*(-UP+RIGHT))
+ rarrow1.set_color(PURPLE)
+ rarrow2 = Arrow(start = ORIGIN, end = 3*(-UP+RIGHT))
+ rarrow2.set_color(PURPLE)
+ rarrow3 = Arrow(start = ORIGIN, end = 4*(-UP+RIGHT))
+ rarrow3.set_color(PURPLE)
+ rarrow4 = Arrow(start = ORIGIN, end = -DOWN+LEFT)
+ rarrow4.set_color(PURPLE)
+ rarrow5 = Arrow(start = ORIGIN, end = 2*(-DOWN+LEFT))
+ rarrow5.set_color(PURPLE)
+ rarrow6 = Arrow(start = ORIGIN, end = 3*(-DOWN+LEFT))
+ rarrow6.set_color(PURPLE)
+ rarrow7 = Arrow(start = ORIGIN, end = 4*(-DOWN+LEFT))
+ rarrow7.set_color(PURPLE)
+
+ rarrow.scale(1.5)
+ rarrow1.scale(1.2)
+ rarrow2.scale(1.15)
+ rarrow3.scale(1.1)
+ rarrow4.scale(1.5)
+ rarrow5.scale(1.2)
+ rarrow6.scale(1.15)
+ rarrow7.scale(1.1)
+
+ self.play(ShowCreation(rarrow),
+ ShowCreation(rarrow1),
+ ShowCreation(rarrow2),
+ ShowCreation(rarrow3),
+ ShowCreation(rarrow4),
+ ShowCreation(rarrow5),
+ ShowCreation(rarrow6),
+ ShowCreation(rarrow7),
+ )
+
+ self.wait(2)
+ self.play(FadeOut(o1), FadeOut(o2))
+
+ self.add_transformable_mobject(arrow)
+ self.add_transformable_mobject(arrow1)
+ self.add_transformable_mobject(arrow2)
+ self.add_transformable_mobject(arrow3)
+ self.add_transformable_mobject(arrow4)
+ self.add_transformable_mobject(arrow5)
+ self.add_transformable_mobject(arrow6)
+ self.add_transformable_mobject(arrow7)
+
+ self.add_transformable_mobject(rarrow)
+ self.add_transformable_mobject(rarrow1)
+ self.add_transformable_mobject(rarrow2)
+ self.add_transformable_mobject(rarrow3)
+ self.add_transformable_mobject(rarrow4)
+ self.add_transformable_mobject(rarrow5)
+ self.add_transformable_mobject(rarrow6)
+ self.add_transformable_mobject(rarrow7)
+
+ matrix = [[1,-1],[1,-1]]
+ self.apply_matrix(matrix)
+ self.wait(3)
+
+ o1 = TextMobject("Consider a set of vectors which are linear span of a vector")
+ o2 = TextMobject(r"$\left(\begin{array}{c} 1 \\ -1 \end{array}\right)$ which is orthogonal to column space i.e. Left Null Space")
+ o1.move_to(2*DOWN)
+ o2.move_to(2.75*DOWN)
+ o1.scale(0.7)
+ o2.scale(0.7)
+ o1.add_background_rectangle()
+ o2.add_background_rectangle()
+ self.play(Write(o1))
+ self.play(Write(o2))
+
+ rarrow = Arrow(start = ORIGIN, end = -UP+RIGHT)
+ rarrow.set_color(YELLOW)
+ rarrow1 = Arrow(start = ORIGIN, end = 2*(-UP+RIGHT))
+ rarrow1.set_color(YELLOW)
+ rarrow2 = Arrow(start = ORIGIN, end = 3*(-UP+RIGHT))
+ rarrow2.set_color(YELLOW)
+ rarrow3 = Arrow(start = ORIGIN, end = 4*(-UP+RIGHT))
+ rarrow3.set_color(YELLOW)
+ rarrow4 = Arrow(start = ORIGIN, end = -DOWN+LEFT)
+ rarrow4.set_color(YELLOW)
+ rarrow5 = Arrow(start = ORIGIN, end = 2*(-DOWN+LEFT))
+ rarrow5.set_color(YELLOW)
+ rarrow6 = Arrow(start = ORIGIN, end = 3*(-DOWN+LEFT))
+ rarrow6.set_color(YELLOW)
+ rarrow7 = Arrow(start = ORIGIN, end = 4*(-DOWN+LEFT))
+ rarrow7.set_color(YELLOW)
+
+ rarrow.scale(1.5)
+ rarrow1.scale(1.2)
+ rarrow2.scale(1.15)
+ rarrow3.scale(1.1)
+ rarrow4.scale(1.5)
+ rarrow5.scale(1.2)
+ rarrow6.scale(1.15)
+ rarrow7.scale(1.1)
+
+ self.play(ShowCreation(rarrow),
+ ShowCreation(rarrow1),
+ ShowCreation(rarrow2),
+ ShowCreation(rarrow3),
+ ShowCreation(rarrow4),
+ ShowCreation(rarrow5),
+ ShowCreation(rarrow6),
+ ShowCreation(rarrow7),
+ )
+
+ self.wait(2)
+ self.play(FadeOut(o1), FadeOut(o2))