Question

Решите плиззззззз
.........

Answer 1

z'(x)=y*(1/x²)'+7*(sin(x²+y))'=y*(-2)*x⁻³+7*cos(x²+y)*(x²+y)'=-2y/x³+14x*cos(x²+y)

z'(y)=(1/x²)*y'+7*cos(x²+y)*(x²+y)'=(1/x²)*1+7cos(x²+1)*1=(1/x²)+7cos(x²+y)