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Math(Please help)

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Evaluate: f(x,y)=2x^3e^y

a) partial derivative with respect to x.

I know that you have to treat y as a constant but I have no idea what to do. I do not understand partial derivatives at all. Please help!!

b) partial derivative with repsect to y.

  • Math(Please help) -

    df/dx = 2 e^y (3 x^2)
    = 6 x^2 e^y

    df/dy = 2 x^3 (de^y/dy) = 2 x^3 e^y (in other words partial with respect to y is original function)

  • Math(Please help) -

    for the first one how did you get (3x^2)?

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