Hi, I have tried this problem a few times. Fx=ax+b gx=x^2+x+1 gfx=x^2-5x+7 Not sure where I'm going wrong. A few tips would be appreciated.
Follow Math Help Forum on Facebook and Google+
Originally Posted by Neverquit Hi, I have tried this problem a few times. Fx=ax+b gx=x^2+x+1 gfx=x^2-5x+7 Not sure where I'm going wrong. A few tips would be appreciated. Your notation is unclear. Did you mean this? ??
Last edited by harish21; April 23rd 2010 at 11:32 PM.
yes it should be f(x),g(x) and gf(x)
Originally Posted by Neverquit yes it should be f(x),g(x) and gf(x) IF then, .......(I) expand this.. Given .........(II) equate (I) and (II) to find a and b.
Hi, I did set the equations together in the first place. Now I have had another look and have solved for b. Thanks!
From ax^2+ 2abx+b^2+ax+b+1= x^2-5x+7 Set x=0 b^2+b-6=0 (b+3)(b-2)…b=-3,2 For 'A' st b=-3, A=1....or...st b=2, A=-1
Last edited by Neverquit; April 24th 2010 at 04:17 AM. Reason: correction
View Tag Cloud