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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?
- ?