Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. Pages: 1 #1 20131025 08:17:03
Solving Systems of Equations Using Substitution Method and EliminationMy progress so far, am I'm doing this right? #2 20131025 09:09:47
Re: Solving Systems of Equations Using Substitution Method and EliminationHi;
You are doing fine. Try the next one.
Graphing is adequate for 2 equations in two unknowns ( x and y) but real world problems are much, much larger. That is the reason we need other methods to solve them. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #3 20131025 18:13:46
Re: Solving Systems of Equations Using Substitution Method and Elimination
If the true answer to a question was x = 5.99997, you'd be unlikely to achieve this accuracy from a graph and be certain you'd got the right answer. More likely, you'd think the answer was x = 6. You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei Pages: 1 