document.write( "Question 1010270: Using Limits to Calculate a Derivative\r
\n" ); document.write( "\n" ); document.write( "Use the definition of the derivative to find f ′(x) if
\n" ); document.write( " f(x)=x^2+x
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Algebra.Com's Answer #627602 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( " $\"f%28x%2Bh%29-f%28x%29=x%5E2%2B%282h%2B1%29x%2B%28h%5E2%2Bh%29-x%5E2%2Bx=2hx%2Bh%5E2%2Bh\"$
\n" ); document.write( " $\"%28f%28x%2Bh%29-f%28x%29%29%2Fh=2x%2Bh%2B1\"$
\n" ); document.write( "So then,
\n" ); document.write( " $\"df%2Fdx=lim%28h-%3E0%2C%282x%2Bh%2B1%29%29=2x%2B1\"$
\n" ); document.write( " \n" ); document.write( "

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