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VMariaS [17]
3 years ago
13

What is the indefinite integral of 1/xln(x^3) dx?

Mathematics
2 answers:
Aleonysh [2.5K]3 years ago
8 0
Hello,

\int\limits{ \dfrac{ln(x^3)}{x}} \, dx = 3*\int\limits{\frac{ln(x)}{x}} \, dx \\\\=3*\dfrac{ln^2(x)}{2} +C
vodka [1.7K]3 years ago
6 0
We are asked to evaluate the integral of the given function:
∫ 1 / x(lnx)³ dx 
<span>Let u = lnx, </span>
<span>du / dx = 1 / x </span>
<span>dx = du(x) </span>
<span>∫ 1 / xu³ du(x) </span>
<span>∫ 1 / u³ du </span>
<span>-1 / 2u² + C </span>
<span>Since u = lnx, </span>
<span>-1 / 2(lnx)² + C </span>
<span>-1 / 2ln²x + C</span>
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