Hi.

I have a problem with my homework. I can't solve this function:

f(z)= (az + b)/(cz + d)

which transfers -1-2i -> -5i, 3 -> 1+5i and -4-3i -> -4+3i

and then calculate w=f(-6-5i).

I've tried to solve this problem for three times and I still haven't got the right resultat. Please help me! bye