Найдите f`(x) ,если f(x)=(2*x+1)/(x-3)

Question

Найдите f`(x) ,если f(x)=(2*x+1)/(x-3)

Answer 1

F'(x)= (2x+1)'*(x-3)-(2x+1)*(x-3)'/(x-3)^2=2x-6-2x-1/(x-3)^2=-7/(x-3)^2