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#1 2011-11-15 07:39:27

Registered: 2007-08-03
Posts: 189

Find a solution

Find a solution to the system of simultaneous equations


#2 2012-01-14 00:52:55

From: Bumpkinland
Registered: 2009-04-12
Posts: 104,727

Re: Find a solution

Hi tony123;

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.


#3 2012-01-14 23:54:21

bob bundy
Registered: 2010-06-20
Posts: 7,613

Re: Find a solution

hi tony123,

Here's how I'd tackle this.

so put

This quadratic has two solutions

You can substitute this back in (2) and also make (say) x the subject, and hence get an equation in y.


Last edited by bob bundy (2012-01-15 00:42:17)

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei


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