Question

Find y' and y''.
y = (ln(4x)) / (x7)

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

What is y" ?

Answer 1

denominator is wrong
it should be x^15

Answer 2

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

Answer 3

yes

Answer 4

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

Answer 5

was ur solution

Answer 6

denominator is wrong
it should be x^15

Answer 7

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

Answer 8

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

Answer 9

can u show me ur steps ?

Answer 10

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