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OpenStudy (anonymous):
f(x)= 2x+1 for X less than or equal to 2 .5X^2+k for X>2 a. What values of K will F be continuous at X=2? b. Using value found in a, determine whether f is differentiable at x=2. Use definition of deriv to justify answer. c.Let k=4 determine whether f is differentiable at x=2 Any help would be nice. I think part a is 2..
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