Let `f(x)=(ax + b )/(cx+d)`. Then the `fof (x)=x`, provided that : `(a!=0, b!= 0, c!=0,d!=0)`

Let f(x) = (ax +b)/(cx + d) (da-cb ne 0, c ne0) then f(x) has

Let f(x)=(ax+b)/(cx+d) , x!=-d/c . If d=-a, show that f{(x)}=x is an identity.

lim_(x rarr0)(ax+b)/(cx+1)

If f(x)=(ax+b)/(cx+d'),ad-bc!=0 is inverse of itself then

Let f(x) =ax^(2) -b|x| , where a and b are constants. Then at x = 0, f (x) is

If f(x)=(ax+b)sin x+(cx+d)cos x, then the values of a b,c and d such that f(x)=x cos x for all x, then (a+b+c+d) is