Find a solution to the system of simultaneous equations
In mathematics, you don't understand things. You just get used to them.
I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.
Here's how I'd tackle this.
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)
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei