document.write( "Question 415948: This is the only inverse-related section, so, here goes:\r
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document.write( "Find the inverse function of Y = (exp)3(sqrt)2x+1\r
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document.write( "I get that you turn f(x) into Y, and replace the X with Y, and vice versa; then move the (exp)3 onto the Y to get rid of the square root. So, it then becomes:\r
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document.write( "X^3 = 2Y+1\r
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document.write( "After that, I'm lost. If I subtract the 1, it becomes X^3-1 = 2Y, but, I can't divide by 2 because there needs to be an X in the denominator. \n" );
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Algebra.Com's Answer #291512 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! y = cbrt(2x+1) \n" ); document.write( "---- \n" ); document.write( "1st: Interchange to get: \n" ); document.write( "x = cbrt(2y+1) \n" ); document.write( "cube both sides: \n" ); document.write( "x^3 = 2y+1 \n" ); document.write( "--- \n" ); document.write( "2y+1 = x^3 \n" ); document.write( "2y = x^3 -1 \n" ); document.write( "y = (x^3-1)/2 \n" ); document.write( "================== \n" ); document.write( "That is the inverse. \n" ); document.write( "=================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |