transgalactic Posted February 20, 2009 Share Posted February 20, 2009 f(x) and g(x) are differentiable on 0 f(0)=g(0)=0 calculate [math] \lim _{x->0}\frac{cosf(x)-cosg(x)}{x^2} [/math] ?? it looks like cauchys mean value theorem F(x)=cos(f(x)) G(x)=cos(g(x)) what to do next?? Link to comment Share on other sites More sharing options...
WhataBohr Posted April 17, 2009 Share Posted April 17, 2009 seems odd.. you might want to look at rolle theorem perhaps Link to comment Share on other sites More sharing options...
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