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Mathematics 15 Online
OpenStudy (anonymous):

What is the rule or theorem that says x^4+3x+1 is differentiable everywhere?

OpenStudy (anonymous):

the Differentiability of Polynomial Functions theorem

OpenStudy (anonymous):

such a good name...

OpenStudy (anonymous):

theorem 5.8 here http://www.integratedcalculus.com/SampleSection.pdf

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