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Old July 3rd, 2009, 09:54 PM
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VonNemo19 VonNemo19 is offline
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Quote:
Originally Posted by fadeer View Post
well I know for sure that the line can not be tangent at x=0
Yeah, the codition a>0 says that, but f'(x)=2x, therefore f'(0)=2\cdot0=0\Rightarrow{a}=0. Mr. Fantastic understands better than I. I'm like you. I'd like to know what's going on here.
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