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Evaluate: int(3x^(2)"tan"(1)/(x)-x"sec"...

Evaluate: `int(3x^(2)"tan"(1)/(x)-x"sec"^(2)(1)/(x))dx`

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`int(3x^(2)"tan"(1)/(x)-x"sec"^(2)(1)/(x))dx`
`=int3x^(2)"tan"(1)/(x)dx-int x"sec"^(2)(1)/(x)dx+tan(1/x)int 3x^2dx-intsec^2 1/x (-1/x^2)x^3 dx+int x sec^2 1/x dx`
`="tan"(1)/(x)x^(3)+int("sec"^(2)(1)/(x))- xdx-int x "sec"^(2)(1)/(x)dx`
`=x^(3)"tan"(1)/(x)+c`
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