[CHALLENGE]The differential co-efficient of f(log x),where f(x)=logx is?[CHALLENGE] A)x/logx B)(xlogx)^-1 C)logx/x D)None of these
@hartnn
its not easy btw..
@sirm3d
@yrelhan4
df(x)/dx nikalna hai?
no idea
im very confused and thisis a tricky question,take it as an exception
pehle vo dekh kya hota hai. aur fir bta. kyunki mereko bhi nhi pta. :P but shayad df(x)/dx hi hota hai.
asksomeone :|
huh :/ mai jaa rha hun. tu dekh liyo.
its just the derivative.
that is what you think,im pretty sure you'll give a wrong answer :P
then i have nothing to do here :P
lol atleast make a guess
A/B/C/D
derivative : f(log x) = log (log x) f'(log x) = (1/ log x ) (log x)' = 1/ (x log x) = B
haha :| wrong
:'P
http://www.wolframalpha.com/input/?i=derivative+of+f%28x%29%3Dlog%28log%28x%29%29 http://www.wolframalpha.com/input/?i=The+differential+coefficient
I think your math teacher is crazy
I looked up the definition of differential coefficient on other sites as well . . . they all said the same thing
The answer is B)
If y = log f(x) \[\frac{dy}{dx}=\frac{f \prime (x)}{f(x)}\]
f(x) = log x f(log x) = log (log x) y = log (log x) f(x) = log x f'(x) = 1/x \[\frac{dy}{dx}=\frac{f \prime (x)}{f(x)}=\frac{1}{x \log_{} x}\]
its D :)
i can answer it
go ahead ! :)
I still think you teacher is crazy . . . what does he teach you differential co-efficient means?
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