Question

y=ln(x+5)^4-10x точка максимума

Answer 1

$y=ln(x+5)^{4}-10x \ y'=(ln(x+5)^{4})'-(10x)'=4*ln(x+5)^{3}*frac{1}{x+5}\ 4*ln(x+5)^{3}*frac{1}{x+5}=0\ ln(x+5)^{3}=0\ ln(x+5)^{3}=ln1\ x+5=1\ x=-4$