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Mathematics
OpenStudy (anonymous):

Find y' and y''. y = (ln(4x)) / (x7) I found that y' = (1- 7 ln(4x)) / (x^7) What is y" ?

OpenStudy (cggurumanjunath):

OpenStudy (cggurumanjunath):

denominator is wrong it should be x^15

OpenStudy (anonymous):

can the first part in numerator x^7(4/4x) be reduced to x^6 ?

OpenStudy (cggurumanjunath):

yes

OpenStudy (cggurumanjunath):

I found that y' = (1- 7 ln(4x)) / (x^7)

OpenStudy (cggurumanjunath):

was ur solution

OpenStudy (cggurumanjunath):

denominator is wrong it should be x^15

OpenStudy (cggurumanjunath):

OpenStudy (cggurumanjunath):

OpenStudy (cggurumanjunath):

3.jpg is ur y'' and is the final answer.

OpenStudy (anonymous):

3.jpg is not correct but thanks for the help. I solved it and got (56 ln 4x - 15)/ (x^9)

OpenStudy (cggurumanjunath):

can u show me ur steps ?

OpenStudy (cggurumanjunath):

denominator is wrong it should be x^8. not x^15 and not x^7 as mentioned in y'

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