Question

integral -1 to 2 |x| dx​

Answer 1

Use Trigonometric Integration: the integral of cosw is sinw. Substitute w = 2 u w=2u w=2u back into the original integral. Rewrite the integral with the completed substitution. Substitute u = 2 x u=2x u=2x back into the original integral.

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Answer 2

Answer:

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