animation added in 4FSS

1 files changed, 168 insertions, 0 deletions

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/CSasImage.py
new file mode 100644
index 0000000..fbb3291
--- /dev/null
+++ b/FSF-2020/linear-algebra/linear-transformations/The-Four-Fundamental-Subspaces/CSasImage.py
@@ -0,0 +1,168 @@
+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.move_to(2*UP)
+        A[1].set_color(color = DARK_BLUE)
+        A.scale(0.75)
+
+        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.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)
+
+        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.wait(1)
+
+class solution(LinearTransformationScene):
+    def construct(self):
+
+        self.setup()
+        self.wait()
+        
+        o = TextMobject(r"Consider the vector space $R^2$")
+        o.move_to(2*DOWN)
+        o.scale(0.75)
+        o.add_background_rectangle()
+        self.play(Write(o))
+        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.move_to(2*DOWN)
+        A.scale(0.75)
+        A.add_background_rectangle()
+        self.play(Write(A))
+        matrix = [[1,-1],[1,-1]]
+        self.apply_matrix(matrix)
+        self.wait()
+        self.play(FadeOut(A))
+
+        o = TextMobject(r"This is the transformed vector space")
+        o.move_to(2*DOWN)
+        o.scale(0.75)
+        o.add_background_rectangle()
+        self.play(Write(o))
+        self.wait()
+        self.play(FadeOut(o))
+
+        texti = TextMobject(r"$\left[\begin{array}{c}1\\1\end{array}\right]$")
+        textj = TextMobject(r"$\left[\begin{array}{c}-1\\-1\end{array}\right]$")
+        texti.set_color(GREEN)
+        textj.set_color(RED)
+        texti.scale(0.7)
+        textj.scale(0.7)
+        texti.move_to(1.35*RIGHT+0.5*UP)
+        textj.move_to(-(1.5*RIGHT+0.5*UP))
+
+        text1 = TextMobject("[")
+        text2 = TextMobject(r"$\begin{array}{c} 1 \\ 1 \end{array}$")
+        text3 = TextMobject(r"$\begin{array}{c} -1 \\ -1 \end{array}$")
+        text4 = TextMobject("]")
+
+        text2.set_color(GREEN)
+        text3.set_color(RED)
+
+        text1.scale(2)
+        text4.scale(2)
+        text2.scale(0.7)
+        text3.scale(0.7)
+
+        text1.move_to(2.5*UP+6*LEFT)
+        text2.move_to(2.5*UP+5.75*LEFT)
+        text3.move_to(2.5*UP+5.25*LEFT)
+        text4.move_to(2.5*UP+5*LEFT)
+
+        self.play(Write(texti), Write(textj))
+        self.wait()
+        self.play(FadeIn(text1), Transform(texti,text2), Transform(textj,text3), FadeIn(text4))
+        self.wait()
+
+        o = TextMobject(r"Now, you can observe the Image of Linear Transformation")
+        o1 = TextMobject(r"and Column Space(i.e. span of columns of matrix $A$) are same")
+        o.move_to(2.5*DOWN)
+        o1.move_to(3*DOWN)
+        o.scale(0.75)
+        o1.scale(0.75)
+        o.add_background_rectangle()
+        o1.add_background_rectangle()
+        self.play(Write(o))
+        self.play(Write(o1))
+        self.wait()
+        self.play(FadeOut(o),FadeOut(o1))
+
+class solution2nd(LinearTransformationScene):
+    def construct(self):
+
+        self.setup()
+        self.wait()
+        
+        arrow1 = Arrow(start = ORIGIN,end = 2*DOWN+RIGHT)
+        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)
+        arrow1.scale(1.3)
+        arrow2.scale(1.5)
+        arrow3.scale(1.1)
+
+        self.play(ShowCreation(arrow1), ShowCreation(arrow2), ShowCreation(arrow3))
+
+        self.add_transformable_mobject(arrow1)
+        self.add_transformable_mobject(arrow2)
+        self.add_transformable_mobject(arrow3)
+        o = TextMobject(r"Consider any vector in the original vector space $R^2$")
+        o.move_to(2.5*DOWN)
+        o.scale(0.75)
+        o.add_background_rectangle()
+        self.play(Write(o))
+        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.move_to(2*DOWN)
+        A.scale(0.75)
+        A.add_background_rectangle()
+        self.play(Write(A))
+        matrix = [[1,-1],[1,-1]]
+        self.apply_matrix(matrix)
+        self.wait()
+        self.play(FadeOut(A))
+
+        o = TextMobject(r"This is the transformed vector space")
+        o.move_to(2*DOWN)
+        o.scale(0.75)
+        o.add_background_rectangle()
+        self.play(Write(o))
+        self.wait()
+        self.play(FadeOut(o))
+
+        o = TextMobject(r"Each and every vector of original vector space $R^2$ will transform")
+        o1 = TextMobject(r"to this new vector space which is spanned by $\mathbf{CS}(A)$")
+        o.move_to(2.5*DOWN)
+        o1.move_to(3*DOWN)
+        o.scale(0.75)
+        o1.scale(0.75)
+        o.add_background_rectangle()
+        o1.add_background_rectangle()
+        self.play(Write(o))
+        self.play(Write(o1))
+        self.wait()
+        self.play(FadeOut(o))
+        self.play(FadeOut(o1))
\ No newline at end of file