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23-01-2018
Mathematics

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Find all positive numbers $x$ such that $\displaystyle{\ln (x^3) = 7}$.

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prosborough198p2ub41 prosborough198p2ub41

23-01-2018

You need to use the rules of logs for this.

ln(x^3)=7
3*ln(x) =ln(7)
3/x=ln(7)
3=ln(7)*(x)
3/ln(7)=x is exact answer to approximate x
x= 1.542

Hope this helps! Any questions please ask! Thank you!

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