- #1
xstetsonx
- 78
- 0
chain rule someone help please
1. let z=y^2-x^2cosy; x=t^3 y=cost, find dz/dt
2. let z=(x-y)^3;x=u+2v,y=2u-v,find dz/dvmy attempt:
so i know the chain rule is (dz/dx)dx+(dz/dy)dy
1. should i substitute the x and y into t first or should i do the partial derivative first?
2. same thing what should i do first?
1. let z=y^2-x^2cosy; x=t^3 y=cost, find dz/dt
2. let z=(x-y)^3;x=u+2v,y=2u-v,find dz/dvmy attempt:
so i know the chain rule is (dz/dx)dx+(dz/dy)dy
1. should i substitute the x and y into t first or should i do the partial derivative first?
2. same thing what should i do first?