limit as h goes to 0 of where f(x) = It looks similar to differentiation from first principles, but I can't see how to use that...
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Hello, Remember that This is a common trick : multiply by The numerator will simplify with the denominator, and what's left is no longer undefined
Originally Posted by PTL limit as h goes to 0 of where f(x) = It looks similar to differentiation from first principles, but I can't see how to use that... Rationalize the numerator: Now you can evaluate the limit by direct substitution. 01 EDIT: too slow...
Hi, Originally Posted by PTL limit as h goes to 0 of where f(x) = It looks similar to differentiation from first principles, but I can't see how to use that... If you are supposed to know that is differentiable at then you can claim that .and all you have to do is compute ...
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