Question

Найти производную y=(ax+b)/(cx+d)

Answer 1

$\frac{ax+b}{cx+d}$ = $\frac{(ax+b)'(cx+d)-(cx+d)'(ax+b)}{(cx+d)^2}$ =  $\frac{a(cx+d)-c(ax+b)}{(cx+d)^2}$ = $\frac{a*cx+a*d-c*ax-c*b}{(cx+d)^2}$ = $\frac{a*d-c*b}{(cx+d)^2}$

Answer 2

У=х(а+б):(с+д)
........................