document.write( "Question 1010711:  I am stuck on this problem.  If I can see this worked out it would help a lot!\r
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document.write( "If f(x) = (1/x - 9x) / (1+3x), what is f(1/x).\r
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document.write( "My book says the answer is x-3 but I cannot get this same answer. \n" );
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