Question: (i) Let f:JR be a real function defined on the non-empty open interval JR. Give the definition for f to be differentiable at a point

(i) Let f:JR be a real function defined on the non-empty

(i) Let f:JR be a real function defined on the non-empty open interval JR. Give the definition for f to be differentiable at a point aJ. (ii) Let f,g:JR be differentiable at a point aJ. State and prove the product rule for the derivative of the function fg

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