February 22, 2017

Homework Help: math

Posted by catherine on Monday, September 13, 2010 at 7:09pm.

Use the limit definition of the derivative to find f′(x) if

1. f(x) = x^2 + 3x
2. f(x) = 1/x + 1

now what i am confuse with is that there is no value given for x. So how is one suppose to do these problems. please show steps and this is just the 3rd chapter of my calc book so don't use shortcuts that come in the future.

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