If` y=1/(a+x)` the `yn` is equal to:

If x=a/(a-1) and y=1/(a-1) , then x is equal to y (b) x is equal to y only if a<1 (c) x is greater than y (d) x is greater than y only if a<1 (e) y is greater than x only if a<1

If (sec y)/(1+x)=(1)/(1-x) then (dy)/(dx) is equal to

If A is the area bonded by x= |y^(2) -1| and y= x -5 then A is equal to

If y=f(x)=(x+2)/(x-1),x,y!=1 then x is equal to