New servers, hooraaaay! More bandwidth, more power.
anybody have any revision notes or pointers?
Can anyone please do C4 January 2011 Question 7 C.
Hi guys , can anyone get me the answers of these questions ? all of them thanks
Looks like its your homework You've got any doubts or are all these questions your doubts?
well ill be specific in a moment of which questions i need anyway. this is important how do u solve thisfind the inverse function of f (x) = 2x + 3/x-1
Let f-1(x) be y and y, x.y = (2x + 3) / (x - 1)y (x - 1) = (2x + 3)yx - y = 2x + 3yx - 2x = 3 + yx (y - 2) = 3 + yx = (3 + y) / (y - 2)Now replace the values again to get :f-1(x) = (3 + x) / (x - 2)