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(i) int(2cos x)/(sqrt(1-4cos^(2) x))dx ...

`(i) int(2cos x)/(sqrt(1-4cos^(2) x))dx " "(ii) int (x+1)/(sqrt(x^(2)+1))dx`

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The correct Answer is:
`(8) log "|" sin x+ sqrt (sin^(2) x-(3)/(4))|+c" "(ii) sqrt(x^(2) +1)+ log | x+ sqrt(x^(2) +1)"|"+c`
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