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Diffstat (limited to 'Linear_Algebra_by_Jim_Hefferon/CH4/EX3.1')
| -rw-r--r-- | Linear_Algebra_by_Jim_Hefferon/CH4/EX3.1/Ex4_3_1.R | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Linear_Algebra_by_Jim_Hefferon/CH4/EX3.1/Ex4_3_1.R b/Linear_Algebra_by_Jim_Hefferon/CH4/EX3.1/Ex4_3_1.R new file mode 100644 index 00000000..3e45a8cf --- /dev/null +++ b/Linear_Algebra_by_Jim_Hefferon/CH4/EX3.1/Ex4_3_1.R @@ -0,0 +1,9 @@ +#Example3.1,chapter4,section1,page 329
+X <- matrix(c(4,-2,2,6),ncol = 2)
+#scalars come out of each row separately,not from the entire matrix at once.
+#so X will become
+A <- matrix(c(2,-1,1,3),ncol = 2)
+#with scalars 2 & 2 coming out of rows 1 and 2 respectively
+c <- det(X)
+d <- 4*det(A)
+all.equal(c,d)
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