hp40g+.book Page 22 Friday, December 9, 2005 1:03 AM
To find derivatives in the Function aplet’s Symbolic view
differentiation function substitutes the value that X holds, and returns a numeric result.
For example, consider the function:
dx( sin(x2 ) + 2cos(x) )
1.Enter the differentiation function onto the command line, substituting S1 in place of X.
S1
S1
2 
S1
2.Evaluate the function.
3.Show the result.
To find the derivative of the function in the Function aplet’s Symbolic view, you define two functions and define the second function as a derivative of the first function. For example, to differentiate sin(x2) + 2cosx :
1.Access the Function aplet’s Symbolic view and define F1.
2 
2.Define F2(X) as the derivative of F(1).
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