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Use logarithmic differentiation to find the derivative of the functiony=(lnx)^(cos12x)...
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High School Teacher
`y= ln x^(cos12x) `
`==gt y= (cos12x)(lnx)`
Now we will use the product rule to find the derivative.
`==gt y' = (cos12x)'(lnx) + (cos12x)(lnx)' `
`==gt y'= (-12sinx)(lnx) + (cos12x)(1/x) `
`==gt y'= -12(sinx)lnx + (cos12x)/x`
Posted by hala718 on March 8, 2012 at 11:13 AM (Answer #1)
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