10. (10%) Use the chain rule to find the rate of change of f(x,y) = (x3 + y3) with respect to t along the curve r(t) = cos(t) i + sin(t) j.
阿摩線上測驗
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阿摩線上測驗
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(x3 + y3) with respect to t along the curve r(t) = cos(t) i + sin(t) j.