document.write( "Question 1189574: Use implicit differentiation to find the equation of the tangent line at the given point\r
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Algebra.Com's Answer #821012 by Edwin McCravy(20056) $\"\"$ $\"About$

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document.write( "  @ (1,0)\r\n" );
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document.write( "We need the formula:  \r\n" );
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document.write( "Let , then .  For the right side,\r\n" );
document.write( " is just a constant and its derivative is 0.\r\n" );
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document.write( "Now we substitute x=1 and y=0, then solve for \r\n" );
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document.write( "That's the slope of the tangent line\r\n" );
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document.write( "Now find the equation of the tangent line which goes thru\r\n" );
document.write( "(1,0), which has the slope m = -1\r\n" );
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document.write( "Edwin

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