anum 0 Posted October 13, 2017 What is f(x) − f(x + 2) if f(x + 1) = x(x + 2)? 0 Share this post Link to post Share on other sites
studiot 2108 Posted October 13, 2017 (edited) Still no working or acknowledgement of the hints I gave you yesterday? Edited October 13, 2017 by studiot 0 Share this post Link to post Share on other sites
J.C.MacSwell 436 Posted October 13, 2017 1 hour ago, anum said: What is f(x) − f(x + 2) if f(x + 1) = x(x + 2)? It is an equation 0 Share this post Link to post Share on other sites
Electrical 0 Posted October 15, 2017 It is an equation. You just need to manipulate the values and you can get your answer. 0 Share this post Link to post Share on other sites
Country Boy 67 Posted October 19, 2017 If you let u= x+ 1, x= u- 1 and x+ 2= u+ 1. So what is f(u)? What is f(x) for any x? 0 Share this post Link to post Share on other sites
inverse 0 Posted October 20, 2017 f(x+1)= x(x+2) ---> f(x+1)= (x+1-1).(x+1+1) ----> f(x)=(x-1).(x+1) and f(x+2)= (x+2-1).(x+2+1)=(x+1).(x+3) f(x)-f(x+2)= x2-1 - x2+4x+3= 4x+2 0 Share this post Link to post Share on other sites
BabcockHall 49 Posted October 20, 2017 inverse, This section is homework help, not homework answers. 0 Share this post Link to post Share on other sites
vovka 0 Posted October 20, 2017 I don't agree with answer. I think 'inverse' forgot to change sign... 0 Share this post Link to post Share on other sites
FrankP 2 Posted October 21, 2017 On 10/19/2017 at 8:53 AM, HallsofIvy said: So what is f(u)? Woah I was reading over this post and thought I saw it get a little intense here but then I realized you were actually helping! haha Ill just keep reading quietly in the background 0 Share this post Link to post Share on other sites
