Let A = R – {3} and B = R – {1}. Consider the function f : A B defined by . Show that f is one-one and onto and hence find f - 1.
Using properties of determinants prove the following:
Expanding along C1, we have:
Hence proved.
Using matrices solve the following system of linear equations:
x - y + 2 z = 7
3 x + 4 y - 5 z = - 5
2 x - y + 3 z = 12