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Graphing Derivatives

The TI-84+ calculators can produce graphs of the derivatives of functions.

EXAMPLE: Graph the derivative of the function:  fx
 
Step 1:
1
  Enter the function into Y1=.
Arrow down so the cursor is in the Y2= entry space.

 

 Step 2:2
GRAPH the original function to see that your viewing window gives a good representation of the graph.		 Step 3: 
3
We will be using the nDeriv command found under the MATH key.   Hit the MATH key and arrow down to choice #8 nDeriv(.
Step 4: 
4
The nDeriv command will appear in the Y2= entry space, where you left the cursor.
We will be using the parameters
nDeriv(Y1, X, X)

. 
 

 Step 5:
5
Hit GRAPH.		 Step 6:
6
To more clearly distinguish the derivative graph, set the graph style to a thicker line (or graph the derivative separately).