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April 20, 2014

April 20, 2014

Posted by **katrina** on Saturday, February 26, 2011 at 1:34am.

[f(a+h)-f(a)]/h

- precalculas -
**drwls**, Saturday, February 26, 2011 at 1:41amYou will have to pick a value of a and of h. If you want a general expression for

[f(a+h)-f(a)]/h with that function, it would be

[4(a+h)^2 - 4a^2]/h

= (8ah +h^2)/h

= 8a +4h

Note that it approaches a constant 8a when h->0

That is called the derivatve of the fucntion at a.

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