Math Is Fun Forum

tony123

Member

Registered: 2007-08-03

Posts: 229

Find a solution

Find a solution to the system of simultaneous equations

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Find a solution

Hi tony123;

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,143

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.

Bob

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

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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
Sometimes I deliberately make mistakes, just to test you!  …………….Bob