1) находим производную 5(х+5)^4/(x+5)^5-5=5/(x+5)-5
приравниваем 1/(x+5)-1=(1-x-5)/(x+5)=0
-x-4=0 x=-4
y(0)=5ln5
y(-4,5)=5ln1/2+5*4,5=22,5-5ln2
y(0)-y(-4,5)=5ln5-22,5+5ln2=5ln10-5*4,5=5(ln10-4,5)<0
y(0)-min
y(-4,5)-max
1) находим производную 5(х+5)^4/(x+5)^5-5=5/(x+5)-5
приравниваем 1/(x+5)-1=(1-x-5)/(x+5)=0
-x-4=0 x=-4
y(0)=5ln5
y(-4,5)=5ln1/2+5*4,5=22,5-5ln2
y(0)-y(-4,5)=5ln5-22,5+5ln2=5ln10-5*4,5=5(ln10-4,5)<0
y(0)-min
y(-4,5)-max