If f(x) = 2x+1, write as a single fraction f (x+1)/ f (x-1) - f(x-1)/ f (x+1). Can someone help me with this please. I have the solution where the f (x + 1) turns to 2(x+1) +1 but I dont get how you get to that.
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Originally Posted by Detanon If f(x) = 2x+1, write as a single fraction f (x+1)/ f (x-1) - f(x-1)/ f (x+1). Can someone help me with this please. I have the solution where the f (x + 1) turns to 2(x+1) +1 but I dont get how you get to that. IF plug in what is inside the into where the x is like this the rest is just algebra of combining 2 fractions
Last edited by bigwave; December 12th 2009 at 12:26 PM. Reason: more info
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