Question 670883
ln sqrt 9r^8s.... instead of a regular sqrt its a cubed root but its not a 3 its 4.Its the sqrrot sigh with a little 4

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ln [4th root of 9r^8s] = ln[r^2*4th root of(9s)]
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= ln(r^2) + ln(4th root of (9s)]
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= 2ln(r) + (1/4)ln(9s)
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cheers,
Stan H.