F4 Maths simultaneous equation

2009-04-15 11:27 pm
If the simultaneous equation
{mx+4y=5
{3x+y=6
do not have any real solution,
then m=?

回答 (1)

2009-04-15 11:41 pm
✔ 最佳答案
{mx+4y=5---(1)
{3x+y=6---(2)
(1)-(2)*4:
(m-12)x=5-24
(m-12)x=-19
x=-19/(m-12)
For the system having no real solution , m=12 such that x is undefined.


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