document.write( "Question 1169488: what is the inverse function of y=3x^3-9 including steps? \n" ); document.write( "

Algebra.Com's Answer #794264 by math_helper(2461) $\"\"$ $\"About$

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document.write( "General strategy: solve for x then swap x & y at the very end.\r
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document.write( "              <--- added 9 to both sides
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document.write( "           <--- divided both sides by 3
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document.write( "   <--- took cube root of both sides\r
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document.write( "   <--- re-wrote w/x on left hand side\r
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document.write( "Now swap x & y:
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document.write( "  <--- this is the inverse function\r
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document.write( "Check...
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document.write( "You can check it by computing  ... it should give you x back.
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document.write( "We plug in '' for 'x' in the inverse function:
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document.write( " (ok)  \n" );
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