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calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.1To 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?

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

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

calculusfunctions
 2 years ago
Best 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?

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

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