document.write( "Question 1208025: Given that f(x) = 1/x and (f/g)(x) = (x + 1)/(x^2 - x), find the function g. \r
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document.write( "Let me see.\r
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document.write( "I know that (f/x)(x) means f(x)/g(x). \r
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document.write( "I think the set up is this:\r
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document.write( "(1/x)/g(x) = (x + 1)/(x^2 - x)\r
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document.write( "I must find g(x).\r
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document.write( "You say? \n" );
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Algebra.Com's Answer #846144 by math_tutor2020(3817)![]() ![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "I'll denote f(x) as simply f. A similar story will apply for g as well.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "f/g = (x+1)/(x^2-x) \n" ); document.write( "(1/x)/g = (x+1)/(x^2-x) \n" ); document.write( "1/(x*g) = (x+1)/(x(x-1)) \n" ); document.write( "x*1/(x*g) = x*(x+1)/(x(x-1)) ..... multiply both sides by x. \n" ); document.write( "1/g = (x+1)/(x-1) \n" ); document.write( "g(x) = (x-1)/(x+1) is the final answer.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Verification using WolframAlpha \n" ); document.write( "https://www.wolframalpha.com/input?i=f%28x%29%2Fg%28x%29+when+f%28x%29+%3D+1%2Fx+and+g%28x%29+%3D+%28x-1%29%2F%28x%2B1%29\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "GeoGebra is another option. \n" ); document.write( "I recommend using the CAS tool in GeoGebra. \n" ); document.write( " \n" ); document.write( " |