Here's the question you clicked on:
swin2013
find dy/dx
\[h(w) = w ^{3}\ln(20w)\]
|dw:1351471283371:dw|what rule should we use?
|dw:1351471516680:dw|
Since we have to derivative the y, aka function of x and we have to derivative w³ln(20w) in respect of x. Apparently there is no x variable. Since we have to derivative in respect of x, we have to treat w as constant and hence the answer is zero.
i know that the derivative for f is 3w^2 but i have problems deriving natural logs
natural logs are easy, the derivative of a natural log is 1/(whatever was in the brackets)
|dw:1351473354263:dw|
@micahwood50 I believe the question was posted ignoring notation...