document.write( "Question 163289: Find the inverse of the following functions:\r
\n" ); document.write( "\n" ); document.write( "f(x)=3x-1 \r
\n" ); document.write( "\n" ); document.write( "I also have to work out\r
\n" ); document.write( "\n" ); document.write( "f(x)= x+3/2x\r
\n" ); document.write( "\n" ); document.write( "The problem is, I can't find the formula to work these out anywhere.\r
\n" ); document.write( "\n" ); document.write( "Please help! \n" ); document.write( "
Algebra.Com's Answer #120317 by KnightOwlTutor(293)\"\" \"About 
You can put this solution on YOUR website!
The first step is to replace f(x) with y and then switch the y and the x and solve
\n" ); document.write( "y=3x-1 isolate for the x variable\r
\n" ); document.write( "\n" ); document.write( "add 1 to both sides\r
\n" ); document.write( "\n" ); document.write( "y+1=3x\r
\n" ); document.write( "\n" ); document.write( "Divide both sides by 3\r
\n" ); document.write( "\n" ); document.write( "1/3y+1/3=x This is the inverse function\r
\n" ); document.write( "\n" ); document.write( "y=x+3/2x
\n" ); document.write( "Simplify this equation\r
\n" ); document.write( "\n" ); document.write( "2/2x=1x\r
\n" ); document.write( "\n" ); document.write( "2/2+3/2=5/2x\r
\n" ); document.write( "\n" ); document.write( "Multiply both sides by 2\r
\n" ); document.write( "\n" ); document.write( "2y=5x\r
\n" ); document.write( "\n" ); document.write( "Divide both sides by 5\r
\n" ); document.write( "\n" ); document.write( "2/5y=x\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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