show that function f: R> { x€R: -1<x<1} defined by f(x) = x/ 1+|x|, x€R is one one and onto function
A trader his goods 20% above the CP he then sells them at a discount at 20% if his cost price is 550 what is his gain or loss and its percentage
find the co-ordinates of the point that divides the line joining the two points P(2,3) and Q(4,5) internally in the ratio 1:2