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Evaluate (please answer all of them) 1) ∫ 1.67 ?^(1/3) ?? = 2) ∫ [(?^3+ sin(4?))...

Evaluate (please answer all of them)

1) ∫ 1.67 ?^(1/3) ?? =

2) ∫ [(?^3+ sin(4?)) / (?^4−cos(4?)+4)] ?? =

3) ∫ ???^8(4?)cot(4?) ?? =

4) ∫ sec^2(4?) ???^5(4?) ?? =

5) ∫ (4x^3) / ((x^4)+3) dx=

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