Question

найдите производную  y=$3 sqrt{2x-9} *(9-x)$

Answer 1

$y=3sqrt{2x-9}cdot (9-x)\\y'=3(frac{2}{2sqrt{2x-9}}(9-x)+sqrt{2x-9}cdot (-1))=frac{6(9-x)}{sqrt{2x-9}}-3sqrt{2x-9}$