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

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

1.	`(i) int(2cos x)/(sqrt(1-4cos^(2) x))dx " "(ii) int (x+1)/(sqrt(x^(2)+1))dx`
Answer» Correct Answer - `(8) log "\|" sin x+ sqrt (sin^(2) x-(3)/(4))\|+c" "(ii) sqrt(x^(2) +1)+ log \| x+ sqrt(x^(2) +1)"\|"+c`