- #1
precondition
- 57
- 0
Have to use chain rule, so I was thinking,
if we let u(t)=tx where x is the vector,
then g(t)=f(u(t)) so dg(t)/dt=d(f u)(t)/dt=(df(t)/dt)u(t)+f(t)(du(t)/dt)
but then I don't know what to do...
if we let u(t)=tx where x is the vector,
then g(t)=f(u(t)) so dg(t)/dt=d(f u)(t)/dt=(df(t)/dt)u(t)+f(t)(du(t)/dt)
but then I don't know what to do...