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Smart people do this math problem (pg. 2)
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| piggy |
Since I'm bored..
| 400 300 300 | | 5000 |
| 200 160 120 | | 2400 |
| 1 1 -2 | | 0 |
| 4 3 3 | | 50 |
| 5 4 3 | | 60 |
| 1 1 -2 | | 0 |
| 4 3 3 | | 50 |
| 0 4-(5/4)*3 3-(5/4)*3 | | 60-(5/4)*50 |
| 1 1 -2 | | 0 |
| 4 3 3 | | 50 |
| 0 1/4 -3/4 | | -5/2 |
| 0 1-(1/4)*3 -2-(1/4)*3 | | 0-(1/4)*50 |
| 4 3 3 | | 50 |
| 0 1/4 -3/4 | | -5/2 |
| 0 1/4 -11/4 | | -50/4 |
| 4 3 3 | | 50 |
| 0 1/4 -3/4 | | -5/2 |
| 0 0 -11/4+3/4 | | -50/4+5/2 |
| 4 3 3 | | 50 |
| 0 1/4 -3/4 | | -5/2 |
| 0 0 -2 | | -10 |
| 4 3 3 | | 50 |
| 0 1/4 -3/4 | | -5/2 |
| 0 0 1 | | 5 |
| 4 3 3 | | 50 |
| 0 1/4 0 | | -5/2+(3/4)*5 |
| 0 0 1 | | 5 |
| 4 3 3 | | 50 |
| 0 1/4 0 | | 5/4 |
| 0 0 1 | | 5 |
| 4 0 0 | | 50-5*3-5*3 |
| 0 1 0 | | 5 |
| 0 0 1 | | 5 |
| 4 0 0 | | 20 |
| 0 1 0 | | 5 |
| 0 0 1 | | 5 |
| 1 0 0 | | 5 |
| 0 1 0 | | 5 |
| 0 0 1 | | 5 | |
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| Krypton |
| quote: | Originally posted by piggy
Since I'm bored..
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Nice, I'm gonna have a hard look at this tomorrow since my brain is already fried, thanks a lot. |
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| Meat187 |
| Whatever you're studying, you suck at it. Go and become a trash collector. |
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| Krypton |
| quote: | Originally posted by Meat187
Whatever you're studying, you suck at it. Go and become a trash collector. |
Got something stuck up ur ass I see. Get a life...;) |
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| winston |
| quote: | Originally posted by Krypton
Got something stuck up ur ass I see. Get a life...;) |
you get a life! don't you see that you annoy half of the population inside this forum? yet you stay to prove a point. to prove that you simply don't care, and that comes off as obnoxious, and kong. the thread title just proves us that you need affection from internet buddies, just get out! |
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| Pokit |
| gaussian elimination makes that so much easier. |
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| tachobg |
| quote: | Originally posted by Krypton
I can't see how my system of equations is wrong, or how my operation using the Gausse Row Reduction Method is wrong...:whip: |
Maybe you're doing row operations on the matrix but not on applying them on the right hand side? |
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| shadow_419 |
add the first two equations and get rid of a variable
400x + 300y + 300z = 5000
200x + 160y + 120z = 2400
400x + 300y + 300z = 5000
-400x - 320y - 240z = -4800
ad0d two equations and solve for one of the variables (y, or z) then substitute |
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| Gauss |
I've finished linear algebra few days ago and have absolutely no intention of solving those problems again.
Oh, and my username is perfect for this thread. :p |
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| SuspicionVandit |
that's way way below the
__ABOVE THIS LINE IS SMART__
group.
But eh, America. When I graduated in California, all that was required (in mathematics) was a passing grade in GEOMETRY. Take into account, the last mathematics class in middle school is Pre-Algebra, which is the pre-requisite for Geometry.
Are you required to learn Matrices? Both times I've come across the method in my life, the instructor's have passed it on saying it's some archaic compton . The substitution from above(shadow_419) is what I was taught and it's very easy. |
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