IF $f(x)=\frac{ax+b}{cx+d}$ then f'(0) equals:

Question

IF $f(x)=\frac{ax+b}{cx+d}$ then f'(0) equals:

Accepted Answer

$\frac{ad-bc}{d^{2}}$

Answer

bc-ad

Answer

$\frac{ad+bc}{d^{2}}$

Answer

b/d