omgitsana
find the integral



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omgitsana
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dw:1358617791231:dw

omgitsana
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i attempted to solve it but i can't get the answer.. which is 24

Jonask
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\[\frac{1}{3}\ln(x^3+3x)\]

Jonask
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just guessed

omgitsana
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yeah i got up to there but i can't get the answer :/

rishabh.mission
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1st take x2=t nd find is dx/dy

rishabh.mission
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its easy but i dont have pen/pencil let me try give few min.

Jonask
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\[\huge{\ln(x^2+3x)}\huge{_{1}^{3}}={\ln(3^2+3(3))\ln(1^2+3(1))}\]

Jonask
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sorry i forgot\[\frac{1}{3}\]
on boh sides