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