HP49G / HP49G+ Tutorials
Part Four - Simple Symbolics
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