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Evaluate: intsec^2(7-4x)\ dx...

Evaluate: `intsec^2(7-4x)\ dx`

Text Solution

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`=intsec^2(7-4x)\ dx`
Let, `7-4x=t`

`-4dx=dt`

`=-(1)/(4)intsec^2(t)\ dt`

`=-(1)/(4)tan t+C`

`=-(1)/(4)tan (7-4x)+C`
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