initial commit / add all books

1 files changed, 6 insertions, 0 deletions

diff --git a/70/CH2/EX2.3.7/2_3_7.sci b/70/CH2/EX2.3.7/2_3_7.sci
new file mode 100755
index 000000000..5643403e2
--- /dev/null
+++ b/70/CH2/EX2.3.7/2_3_7.sci
@@ -0,0 +1,6 @@
+//page 93
+clear;
+close;
+clc;
+disp('The column space of A is excatly the space that is spanned by its columns.The row space is spanned by the rows.The definition is made to order.Multiplying A by any x gives a combination of columns; it is a vector Ax in the column space. The coordinate vectors e_1,....e_n coming from the identity matrix span Rn. Every vector b=(b_1.....,b_n) is a combination of those columns.In this example the weights are the components b_i themselves:b=b_1e_1+.....+b_ne_n.But the columns of other matrices also span R_.')
+//end
\ No newline at end of file