`(-1)/(2)int(dt)/(sqrt(1-t)sqrt(t))`

int(dt)/( sqrt(1-t)-t)

(1)/(3)int(t*dt)/(sqrt(1+t))

int(dt)/( sqrt(t-1))

int(1)/(sqrt(t))dt

(1)/(2)int(dt)/((1+t))

int(dt)/(sqrt(3t-2t^2))

int(1)/(sqrt(t)+1)dt

int1/(sqrtt(1+t))dt

If e^x=(sqrt(1+t)-sqrt(1-t))/(sqrt(1+t)+sqrt(1-t))a and tany/2=sqrt((1-t)/(1+t)) ,then (dy)/(dx) at t=1/2 is (a) -1/2 (b) 1/2 (c) 0 (d) none of these

int sqrt(t)dt