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Need some serious help with this assignment
- Thread starter kdub87k
- Start date
Looks like you "forgot" to read "Read before Posting"; 2 items:
Show all of your work. If you've shown no work at all, the tutors may assume that you're needing help getting started, and may suggest only how to do the first step. Even if you're asking only about the very end of the solution process, still include all of your intermediate steps. Errors may have occurred earlier than you'd realized; correcting part (b) may clear up your confusion on part (d).
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Show all of your work. If you've shown no work at all, the tutors may assume that you're needing help getting started, and may suggest only how to do the first step. Even if you're asking only about the very end of the solution process, still include all of your intermediate steps. Errors may have occurred earlier than you'd realized; correcting part (b) may clear up your confusion on part (d).
Have patience. There is no paid staff waiting on-hand to give instant replies. Many of the volunteer tutors have "real" jobs, and they all have to sleep from time to time. The people "viewing" your posts may be fellow students. Please don't be offended if there are "views" but no replies. It may take hours, even days, for a tutor, qualified in your topic's area, to respond.
BigGlenntheHeavy
Senior Member
- Joined
- Mar 8, 2009
- Messages
- 1,577
Hint:
First one is an identity,
Second one is a conditional equation,
And third is a contradiction.
First one is an identity,
Second one is a conditional equation,
And third is a contradiction.
NarayanaIyer
New member
- Joined
- Jul 3, 2010
- Messages
- 1
X+7y=3 and 3x+21y=9
x+7y=3 and 3x-21y=9
x+7y=3 and 3x +21y=-9
which one is unique, infinite, or none
anybody want to help?kdub87k
New Member
Posts: 4
Joined: Fri Jul 02, 2010 3:01 am
First set :Botha re same equations, since divide the second eqn by 3, we obtain x+7y=3 can give infinite soln.
Second set: Divide the second eqn by 3, we obtain 3x-7y=9 . Different from the eqn 3x+7y=9 Hence unique
Third set: Divide by 3 the sencond eqn: x+7y=-9 . Subtracting e get 0=18 an inconsistent equation. ( In other wrds it is no equation at all!)
x+7y=3 and 3x-21y=9
x+7y=3 and 3x +21y=-9
which one is unique, infinite, or none
anybody want to help?kdub87k
New Member
Posts: 4
Joined: Fri Jul 02, 2010 3:01 am
First set :Botha re same equations, since divide the second eqn by 3, we obtain x+7y=3 can give infinite soln.
Second set: Divide the second eqn by 3, we obtain 3x-7y=9 . Different from the eqn 3x+7y=9 Hence unique
Third set: Divide by 3 the sencond eqn: x+7y=-9 . Subtracting e get 0=18 an inconsistent equation. ( In other wrds it is no equation at all!)