Ish programmes’ Schlafly

I like maths but Im not very good at it.
This is my favourite computer programme of any kind and it was written in 1992 by Roger Schlafly and is free to download at; www.mindspring.com/~schlafly/roger.htm
With this programme you input an equation and it solves it! Brilliant indeed it occurs to me that this would be one of the very, very few times you could legitimately use the word awesome – well maybe you couldn’t but I could because I do , maybe in my ignorance, wonder at its power.
Yesterday for example a client had £10,230 and wanted to invest it for as long as it took to reach £12,500 with an interest rate of 5%.
Now I know you can do this easily with Excel but it is so boring with a spreadsheet.
With this programme you type in your equation and it solves the equation. So you need to construct an equation first. In this case 10230 X 1.05^x = 12500. When you type it in you get the result, 4.107 years. Which equals 4 years and 39 days.

He also has a very nice collection of quotations too including this one from CS Lewis;

‘Of all tyrannies a tyranny sincerely exercised for the good of its victims may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies, The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated; but those who torment us for own good will torment us without end, for they do so with the approval of their own conscience.’