Problem solved
Hi,
Sorry about the delay, I have been traveling. Thanks to all who inputted to the thread.
This is not homework or anything to do with a course or 'official' structured learning. Its for a real world application in a device I'm building for my home (I'm 55 years old btw..
.
I did find a method to achieve what I was looking for but to make it easier for myself, I decided to cross one axis at 1. With two points defined, one on an axis, I found methods to solve that. After solving it and then looking at the relevant curve I discovered that it was not going to do what I wanted anyway
. Oh well, it was a good exercise to go through.
What I found I needed is a series of stepped linear sections that would give a better display of the data I was trying to show.
I design and build electronic stuff (and write software). I do this as a hobby although my job is electronics related.
I have an energy monitoring system in pace, it keeps track of domestic power usage and solar production. Within this system I have available a real-time feed (5 second chunks) of what the current power status is, exactly how much is being imported or exported.
I though it would be good to have a large (about a meter high) bar-graph display that tracks in real time what is happening. There are several reasons for a large display, not least of them is my eyesight is not what it used to be, so I can see from a distance whats going on.
My peak possible consumption is about 8KW but that has never happened. Most of the activity is between 0 and 4KW and thats only when the kettle and several other devices are all on. Generally it sits around 150 - 250W so I needed a display that was quite sensitive at the low end and as consumption increased, the scale becomes more compressed.
This seems best achieved by a series of line segments that change slope as the consumption increases.
The reason I mention all this is to show:
Math does actually have real life uses
The best way to learn is to have an actual real 'thing' to solve.
Thanks all.
StewieTee