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find f'(x) from first principles, that is, directly from the definition of derivative f(x) = (4-x)/(3+x)

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how would you solve this step by step?

derivative-of-the-function
first-principal-of-dervatives

asked Aug 25, 2015 in CALCULUS by anonymous

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1 Answer

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The function is .

Find the derivative of the function using limit definition of derivatives.

Limit definition of derivative: .

.

Substitute and in limit definition of derivative.

.

.

answered Aug 25, 2015 by Sammi Mentor

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