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Find the following integrals:(i) int(x^3...

Find the following integrals:(i) `int(x^3-1)/(x^3)dx` (ii) `int(x^(2/3)+1)dx` (iii) `int(x^(2/3)+2e^x-1/x)dx`

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(i) Given `int(x^3-1)/(x^3)dx`
`=int(x-1/(x^2))dx`
`=intxdx-int(1/(x^2))dx`
`=(x^2)/2+1/x+c`
...
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