I'm having trouble simplifyingAnd this one...Code:x+1 ------------ 1 - 1/(x^2)
taCode:y - (y/x) ---------- (1/x) - 1
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Revelation
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- 10-04-2006 17:16
Last edited by Revelation; 10-04-2006 at 18:00. -
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- 10-04-2006 17:20
(x + 1) / (1 - (1/x^2))
= x^2(x + 1) / (x^2 - 1)
= x^2(x + 1) / ((x + 1)(x - 1))
= x^2/(x - 1) -
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- 10-04-2006 18:49
For the second one, use y - (y/x) = y(1 - (1/x)) = -y((1/x) - 1).
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- 10-04-2006 23:00
sorry, I don't understand that. Anyone care to elaborate? thanks
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Bengaltiger
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- 10-04-2006 23:25
[y - (y/x) ] / [ (1/x) - 1 ]
Lets simplify the numerator.
So, from y - (y/x) we can take y out. So you have
y( 1 - (1/x)), however, becuase we want to simplfy, we want something to cancel out on both the top and bottom. Therefore, it would be best to take -y out which leaves us with
-y((1/x) - 1)
Now you can see that the (1/x) - 1) will cancel with the denominator and hence, your anwser is -y. -
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- 10-04-2006 23:34
ah yes, thank you.
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