HP49G / HP49G+ Tutorials

Part Four - Simple Symbolics

 

Other Tutorials Here

 

 The main strength of the HP49x is the power symbolic maths engine built in. Here's how to use it.

 

Example: Solve A*X^2 + B*X + C = 0 for X

Type the Equation to be Solved - Doing it algebraically is most convenient

 Type the Variable to Solve for - in this case X

Press Right Shift 4 to access the Algebra menu - Notice the Softmenu?

Press 'NXT' to scroll along the softmenu

Press 'SOLVE' to obtain the solution(s)

To view the solution easily, press 'UP' to select it

and press 'VIEW' for a nice large scrolling view

 

Some other Algebraic Examples

 

The other commands work the same way. Put the object on the stack, then run the command

Hit 'EXPAND' to expand the brackets

And either 'COLLE' (Collect Like Terms) or 'FACTO' (Factorise) to find the factors.

 

Now suppose we wish to find the result where X is 7.

Make a list by pressing the curly brackets, type X, then SPC (space), then 7, then ENTER

Press the WHERE operator (|) in mathematical notation

Press ->NUM to find the result

 

Note that you can fill in for many variables, just add more items to the list - EG you could type {A 10 B 20 C 30 Y 50} to sub in for A=10, B=20, C=30 and Y=50.

 

We can easily differentiate and Integrate.

Take This Formula

Press Left Shift 4 for the Calculous Menu

DERVX will find the derivative with respect to X

Or INTVX will integrate with respect to X (You could simplify this result with COLLE)

 

See The Other Tutorials Here