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Evaluate int (-1)^(1) (x^(3)+5x+ sin x) ...

Evaluate `int _(-1)^(1) (x^(3)+5x+ sin x) d x `

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The correct Answer is:
`["using"int_(-a)^(a) f(x) dx={(2 int_(0)^(a)f(x)dx","f(x)"is even"),(0","f(x)" is odd"):}]`
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