Approximate Slope of a Function
We are given the function:

We will find the approximate value of the slope at (e,11).
It's required to use 3 possible values of the approximation differential h.
Let's use h=0.1 and evaluate the function at x = e + 0.1 = 2.8182818
Compute:

Compute the difference quotient:

Now we use h=0.01:

The difference quotient is:

Finally, use h=0.001:


The last result is the most accurate, thus the slope of the tangent line is 2.94