Posted by Anonymos on Tuesday, September 4, 2012 at 11:33pm.
ok genius, When you type fast sometimes it happens...move along!
assuming you mean
f(x) = (3x+1)/(8x-9)
g(x) = 5x/(8x-9)
(f+g)(x) = [(3x+1)+5x]/(8x-9) = (8x+1)/(8x-9)
(f/g)(x) = (3x+1)/(8x-9) * (8x-9)/5x = (3x+1)/5x
domain is all reals except where the denominator is zero.
visit wolframalpha.com and type
plot <function>
to see a graph of <function>
That should help you get a handle on the range
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