0.5√121 + 3√ 0.81 = 0.5 ×11+3×0.9=5.5+2.7=8.2
A-5/5a+25+3a+5/a^2+5a= а+5/5(а+5)+3а+5/а(а+5)=a^2-5а+15а+25/5а(а+5)=(а+5)^2/(а+5)=1/(а+5)
{x+ y = 5
{x^2 + 4y =8
{x = 5-y
{x^2 +4y = 8
{x=5-y
{25 - 10y + y^2 + 4y = 8
{x = 5-y
{y^2 - 6y + 17 = 0
y^2 - 6y + 17 = 0
D1 = 9 - 17<0 решений нет
Y'(x) = - (x^(-6/5))/5 + (x^(-4/5)) / 5 + 1
y'(32) = - (32^(-6/5))/5 + (32^(-4/5)) / 5 + 1 = -1/(64*5) + 1/(16*5) + 1 = (-1+4+320)/320 = 323/320