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| author | Prashant S | 2019-10-04 12:27:32 +0530 |
|---|---|---|
| committer | GitHub | 2019-10-04 12:27:32 +0530 |
| commit | ac2986488a9731cff5cbb517d8f0ef98e2561d64 (patch) | |
| tree | 7bb3f64824627ef179d5f341266a664fd0b69011 /Linear_Algebra_by_Jim_Hefferon/CH1/EX1.4 | |
| parent | cbb2770fb2f88246175add29623103a56ba338b8 (diff) | |
| parent | b3f3a8ecd454359a2e992161844f2fb599f8238a (diff) | |
| download | R_TBC_Uploads-master.tar.gz R_TBC_Uploads-master.tar.bz2 R_TBC_Uploads-master.zip | |
Added R TBC
Diffstat (limited to 'Linear_Algebra_by_Jim_Hefferon/CH1/EX1.4')
| -rw-r--r-- | Linear_Algebra_by_Jim_Hefferon/CH1/EX1.4/Ex1_4.R | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Linear_Algebra_by_Jim_Hefferon/CH1/EX1.4/Ex1_4.R b/Linear_Algebra_by_Jim_Hefferon/CH1/EX1.4/Ex1_4.R new file mode 100644 index 00000000..7a1b7ebc --- /dev/null +++ b/Linear_Algebra_by_Jim_Hefferon/CH1/EX1.4/Ex1_4.R @@ -0,0 +1,22 @@ +#Example 1.4,Section I. Solving Linear Systems
+#page 3
+#package used: matlib
+#installation run command : install.packages("matlib")
+#package repo : https://github.com/friendly/matlib
+
+#installing and loading library
+#install.packages("matlib")
+library("matlib")
+
+#program
+A <- matrix(c(0,1,1/3,0,5,2,3,-2,0),ncol = 3,nrow = 3)
+b <- c(9,2,3)
+Ab <- cbind(A,b)
+Ab <- rowswap(Ab,1,3)
+Ab <- rowmult(Ab,1,3)
+Ab <- rowmult(Ab,1,-1)
+Ab <- rowadd(Ab,1,2,1)
+Ab
+#from Ab (X3=3)(since drom row3,3*X3=9)
+#from Ab row2 -1*X2-2*x3=-7,so X2=1
+#from Ab row1 X1+6*x2=9,so X1 = 3
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