Question

Who Knows Calc III multivariable calculus?
I need help using the chain rule given:
f(x, y)=x^2+y^2
x(r,s,t)=[r cos s, s sin t]
and find d/dr f(x(r,s,t)), d/ds f (x (r; s; t)), d/dt f (x (r; s; t))

Answer 1

knock knock, the net is so bad, I cannot access, still need help?