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Let -(6x+3) f(x) = 3x 3x if if x > 1 if x < 1 if -1x1 if x > 1 Find a formula


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Let -(6x+3) f(x) = 3x 3x if if x > 1 if x < 1 if -1x1 if x > 1 Find a formula for f'(x). Note: f(x) is differentiable at x= -1, but is NOT differen tiable at x = 1. Can you see why that is so? if x < -1 f'(x) = -1

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