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- !Help file for !Solver v1.00
- ----------------------------
-
- © David Bradshaw 1993
- © Acorn Computing 1993
-
- Introduction:
-
- !Solver is a small multi tasking application which takes a quadratic
- equation, rearranges it, and then finds its solutions.
-
- What is a Quadratic?
-
- A quadratic is an equation which has a highest power of 2. In other words,
- terms can be squared but not cubed etc. An example of a quadratic is :
-
- 3x² + 5x - 6 = 0.
-
- This is the standard way of writing quadratics, but they appear in many
- shapes and forms. You may enter equations into !Solver in any arrangement -
- the program will rearrange into the above form for you before solving the
- equation.
-
- Due to the nature of quadratics, there are usually two solutions for x or
- none at all. i.e. there will most likely be either two numbers, when
- substituted for x, make the equation true, or no solutions at all.
-
- How to use !Solver:
-
- Double click on the icon from a filer window in the usual way. The icon will
- appear on the iconbar, and the main window may be opened by clicking on this
- icon with select. A menu may be obtained by cliking with menu.
-
- In the main window, the equations are entered into a writable icon near the
- top. On pressing return, the equation will appear in the window rearranged,
- and the two solutions will be given at the bottom.
-
- To enter the equation, you must use x2 for squared terms, and leave no
- spaces in the equation. Two examples of how the above equation may be
- entered are 3x2+5x-6=0 and 3x2+5x=-6. They would both be rearranged to give
- the same result. Of course, there are an infinite number of ways the one
- equation could be entered. The equations may be quite complex - the
- following is quite acceptable: 5x2-4x+3x-4=6x2+9x-2x2+4-3.
-
- !Solver will display the solutions to the whole number, 2 decimal places, or
- 7 decimal places. You may change this option whenever you like, even after
- the solutions have been given. Click with menu either over the main window
- or over the icon on the iconbar, and go accross to the 'Accuracy' submenu.
- You will be presented with the choice, and the tick shows the current
- setting. !Solver may be quit in the normal mannor of choosing 'Quit' from
- the iconbar menu.