int_(0)^(2)sqrt((2+x)/(2-x))dx

int_0^2sqrt((2+x)/(2-x))dx is equal to

int_0^2sqrt((2+x)/(2-x))dx=

int_(0)^(a)sqrt(a^(2)-x^(2))dx=

I=int_(0)^(2)x sqrt(4-x^(2))dx

int_(0)^(2)sqrt(2x-x^(2))dx

Which of the following are true: I : int_(0)^(4) sqrt(x^(2)-4x +4)dx=4 II : int_(0)^(2) sqrt(x^(2)-4x+4)dx=2 III : int_(2)^(4) sqrt(x^(2)-4x+4)dx=2

int_(0)^(2a) sqrt(2ax - x^(2)) dx=

int_(0)^(2) sqrt(2-x)dx .

int_(0)^(2) sqrt(2-x)dx .

int_(0)^(2)x sqrt(x+2)dx