In solving system equations, what are the strength and weaknesses of the graphing, substitution and linear combination methods?
2007-05-31 16:59:45 · 2 answers · asked by good boy 1 in Science & Mathematics ➔ Mathematics
They all produce good answers, however, they can take a great deal of time. tf
2007-05-31 17:11:06 · answer #1 · answered by Knick Knox 7 · 2⤊ 0⤋
In case, you get values like (11/35, 2/3) to graph, you can never draw a correct graph. There are some equations where integral coordinates are difficult to find. The only strength of a graphical solution is just that, it helps you find the solution.
The substitution method is more helpful. You get accurate solutions like you can never get by graphing. But sometimes, direct substitution method can result in long calculations, where anyone can make a mistake.
In elimination method, you get the answer quickly, but sometimes, you must struggle trying to equate the coefficients.
Crammer's rule (Cross - multiplication method) is the best way, though that too needs some calculation.
2007-06-01 00:39:21 · answer #2 · answered by Akilesh - Internet Undertaker 7 · 0⤊ 0⤋