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- DQua v1.00 documentation - OS2+
-
-
- AboutThisDoc
-
- This documentation describes release 1.00 of the utility DQua. This
- Program is freely distributable. However copyright is retained by the author
- and no more than a nominal fee may be charged for distribution (price of a
- fish disk).
-
- (* Legal stuff *)
- In short, if any thing happens it's not my fault! You use this program at
- your own risk. Nothing should happen though.
-
-
- Introduction
-
- DQua is a simple utility for obtaining the roots of quadratic equations
- Any comments, suggestions or cash are always welcome at the following address
-
- Lee Kindness
- 8 Craigmarn Road
- Portlethen
- Aberdeen AB1 4QR
- SCOTLAND
-
- DQUA REQUIRES KICKSTART 2 (V36) OR GREATER
-
-
- Usage
-
- DQua is started by double-clicking its icon or typing DQua at the
- Shell prompt.
-
- All input to DQua is through the use of 3 string gadgets: a, b, and c.
- Each gadget represents a value related to the general quadratic form:
-
- ax + bx + c = 0
-
- All input to DQua must be in this form. So for example to solve the
- following equation, brackets must be multiplied out and the result rearranged.
-
- (t+1) + 2t = 8t
- => (t+1)*(t+1) + 2t = 8t
- multiply out brackets => t + 2t + 1 + 2t = 8t
- rearrange => t - 4t + 1 = 0
- | | |
- / | \
- / | \
- a = 1 b = -4 c = 1
-
- Simply enter the values and hit the 'solve' gadget to solve.
-
-
- History
-
- DQua is written in HighSpeed Pascal on an Amiga A1200 120MBHD.
- Source is included with this distribution.
-
- o v1.00 : 5.2.94
- - initial release
- - Future
- - Results in read only listview?
- - entering of formulae direct?
- - ?
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