Slippery Slopes
The derivatives of exponential functions show a very interesting pattern. Your task in this activity is
to find the pattern.
- Start with the exponential function defined by the equation y = 2x.
- Your first task is to create an In-Out table like the one shown here.
Use these two steps to get a row of the table.
- Pick a whole-number valuse for x and find the y-value that goes with it.
- Get a good approximation for the derivative of the function at the point on the graph of the function y = 2x that is represented by your
x- and y-values.
Go through these two steps for several points to get several rows for the table.
- Once you have several rows for your table, study the data and write an equation expressing the derivative in terms of the y-value. (If nececcary, develop
more rows of the table.)
- Repeat the process described in Question 1, but this time use the function whose equation is y = 10x
.
- Pick a thrid exponential function and go through the process from Question 1 for that function.