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love_mathBest ResponseYou've already chosen the best response.1
derivative of sinx divided by sinx
 one year ago

satellite73Best ResponseYou've already chosen the best response.1
\[\frac{d}{dx}[\ln(f(x))]=\frac{f'(x)}{f(x)}\] via the chain rule
 one year ago

franciscanmonkBest ResponseYou've already chosen the best response.0
f(x) = ln(sinx) y' = (1/sinx)(cosx) y' = cosx/sinx y' = cotx
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
f'(x)=d(lnsinx)/dx = {d(ln sinx) /dsinx} * {dsinx /dx} ={1/sinx} *{cosx} =cosx/sinx =cotx
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
oops? @satellite73
 one year ago

jpjonesBest ResponseYou've already chosen the best response.0
why cot x and not tan x
 one year ago

satellite73Best ResponseYou've already chosen the best response.1
there was an erroneous tangent floating around, it is gone
 one year ago

satellite73Best ResponseYou've already chosen the best response.1
oh look, it came back!!
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
U can write it interms of tan x too
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
BUT: f'(x)= 1/tan x
 one year ago
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