I got stuck on this one, once i saw the sin, i just didn't know what to do. All this is one problem. The Answer according to the book is Cos(x) f(x) = sin(x) f(x) = lim sin(x+h) - sin (x) over h ........h->0
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Originally Posted by Cyberman86 I got stuck on this one, once i saw the sin, i just didn't know what to do. All this is one problem. The Answer according to the book is Cos(x) f(x) = sin(x) f(x) = lim sin(x+h) - sin (x) over h ........h->0 You're expected to recognise the limit as the derivative of sin x (calculated from first principles).
Interesting, let me give this a bash: as h---->0:
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