`int(x^4-1)/(x^2sqrt(x^4+x^2+1))dx=` `sqrt(x^2+1/(x^2)+1)+C` `(sqrt(x^4+x^2+1))/(x^2)+C` `(sqrt(x^4+x^2+1))/x+C` (d) none of these

int(2sin^(-1)x)/(sqrt(1-x^(2)))dx

int (x^2 -1 )/ (x^3 sqrt(2x^4 - 2x^2 +1))dx is equal to

(1)/(sqrt(x^(2) + 4x + 2 ))

(1)/(sqrt(x^(2)- 4 x + 5 ))

int (x^4-1)/(x^2)sqrt(x^4+x^2+1) dx equal to (A) sqrt((x^4+x^2+1)/x) + c (B) sqrt(x^4 + 2 - 1/x^2) + c (C) sqrt(x^2 + 1/x^2 + 1) + c (D) sqrt((x^4-x^2+1)/x) + c

int(sqrt(x^2+1))/(x^4)dx=

(2x + 3)/(sqrt(x^(2)+ 4 x + 1 ))

d/(dx)[cos^(-1)(xsqrt(x)-sqrt((1-x)(1-x^2)))]= 1/(sqrt(1-x^2))-1/(2sqrt(x-x^2)) (-1)/(sqrt(1-x^2))-1/(2sqrt(x-x^2)) 1/(sqrt(1-x^2))+1/(2sqrt(x-x^2)) 1/(sqrt(1-x^2)) 0 b. 1//4 c. -1//4 d. none of these

int(sqrt(1-x^(2))-x)/(sqrt(1-x^(2))(1+xsqrt(1-x^(2))))dx is

Evaluate: int(x^2-1)/((x^2+1)sqrt(x^4+1))dx