If f(x)=[(c+x)/(d+x)]c+d+2x Show …
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Soumya Ghoshal 6 years, 9 months ago
logf(x) =(c+d+2x)(log(c+x)-log(d+x))
or,f'(x)/f(x)=2(log(c+x)-log(d+x))+(c+d+2x) ((1/c+x)-(1/d+x))
f'(0)=f(0)*2(logc-logd)+(c+d)(1/c-1/d)
f'(0)=(c/d)^(c+d)[2{log(c/d)+(c+d)(d- c)/cd}]
f'(0)=(c/d)^(c+d)[2{log(c/d)+(d^2-c^2)/cd}]
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