Math Wiki

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  • curprev 03:1803:18, 6 April 2008Whikiker talk contribs 351 bytes +351 New page: <math>\frac{d}{dx}x^r=rx^{r-1}</math>, for any real number ''r''. ==Prerequisites== <math>\frac{d}{dx}ln u=\frac{u'}{u}</math> ==Proof== Let <math>y=x^r</math>. Then: :<math>ln y=ln x^r=...