My book indicates gives the solution: f'(x) = (x)(e^-x)(-1) + (x^-x)(1) = e^-x(1 - x)

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First, I would like to recall the product law for the derivatives, ...

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Integrals and Derivatives. ... equation, multiplying the coefficient of a new exponential value is ... make an exact equation and thus can find anti- derivative on both ...

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... have to do is to equate the logarithmic derivatives of the ... of the density of state function is in the exponential. ... the energy we get the the derivative of the ...

... dY will be taken positive, so the derivative dX/dY ... of Y . 6. Use moment generating functions to ﬁnd ... b) the sum of two independent exponential variables, each ...