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Evaluate: intcos e c^3\ x\ dx...

Evaluate: `intcos e c^3\ x\ dx`

Text Solution

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`I=\int {cosec}^{3} {dx}`
Integration by part,
`{cosec}={u} ; \quad {v}={cosec}^{2} {x} `
`\frac{{du}}{{dx}}={cosec} \cot {x} ; \quad \int {vdx}=-\cot {x}` ...
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