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Question

loser66 · Answer

the rate of change is not the gradient ? partial derivative?

loser66 · Answer

any idea, friends?

anonymous · Answer

dx/dt=2
dy/dt=-4t
dx/dt(1)=2
dy/dt(1)=-4

luigi0210 · Answer

Sorry 66, I know rate of change but have never learned it using parametrics

loser66 · Answer

@Luigi0210 it's ok, it's from cal3

loser66 · Answer

sure!! you are right.

anonymous · Answer

How do I get the answer, -8 from there?

loser66 · Answer

can you draw out the formula of gradient? to put everything in neat?
what is the original question? do they ask you about the direction of rate of change of f ?

loser66 · Answer

the net is not good here, too. I think you are kicked out of the net!!