- #1
LinearAlgebra
- 22
- 0
When do you know to use the chain rule??
I really don't understand what this means: dr/dt = dr/ds * ds/dt
Like in one example in the book they have:
r(s) = cos2si + sin2sj + e^-3sk where s = t^4
Then they find dr/dt using the chain rule. My question is why can't you just differentiate it normally by the individual components? How would that be different?
I really don't understand what this means: dr/dt = dr/ds * ds/dt
Like in one example in the book they have:
r(s) = cos2si + sin2sj + e^-3sk where s = t^4
Then they find dr/dt using the chain rule. My question is why can't you just differentiate it normally by the individual components? How would that be different?