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

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

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

calculusfunctions Group TitleBest ResponseYou've already chosen the best response.1
YES!!
 one year 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?
 one year ago

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

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

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