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枫下家园 / 望子成龙 / 求助! 小女GRADE11 MATH. if g(x)=1-x平方 and f(g(x))=(1-x平方)/x平方, find f(x). 以前学的全忘记了!
-littleriver(running river);
2008-11-25
(#4872034@0)
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f(x)=x/(1-x)
-longtimeagotoo(may);
2008-11-25
(#4872500@0)
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f(x)=x/(1-x)
-hm003(零零三);
2008-11-27
(#4873321@0)
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try...g(x)=1-x平方,
so, x平方=1-g(x),
F(g(x))=F(X)=(1-x平方) / x平方=g(x) / x平方=g(x) / 1-g(x).
F(g(x)), so, F(X)= X / 1- X.
-yiranguwo(依然故我);
2008-11-26
{127}
(#4874120@0)
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inverse functions?
-123(Leon);
2008-11-27
(#4878148@0)