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swin2013 Group TitleBest ResponseYou've already chosen the best response.2
\[\ln(\cos(w1))\]
 2 years ago

calculusfunctions Group TitleBest ResponseYou've already chosen the best response.1
To take the derivative of the natural logarithm function, divide the derivative of the argument function by the argument function. Thus\[\frac{ d(\ln f(x)) }{ x }=\frac{ f \prime(x) }{ f(x) }\]Do you understand?
 2 years ago

swin2013 Group TitleBest ResponseYou've already chosen the best response.2
so it's 1/cos(w1) * sin(w1) *1?
 2 years ago

calculusfunctions Group TitleBest ResponseYou've already chosen the best response.1
Sorry, that should be dx in the first denominator.
 2 years ago

calculusfunctions Group TitleBest ResponseYou've already chosen the best response.1
YES!!
 2 years ago

calculusfunctions Group TitleBest ResponseYou've already chosen the best response.1
\[\frac{ d(\ln (\cos (w 1)) }{ dx }=\frac{ \sin (w 1) }{ \cos (w 1) }=\tan (w 1)\]Understand?
 2 years ago

calculusfunctions Group TitleBest ResponseYou've already chosen the best response.1
@swin2013 I asked if you understood.
 2 years ago

swin2013 Group TitleBest ResponseYou've already chosen the best response.2
yes i do sorry, i was working on another problem :)
 2 years ago

calculusfunctions Group TitleBest ResponseYou've already chosen the best response.1
No worries!
 2 years ago
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