Comments on: MATH6038: Week 3
https://jpmccarthymaths.com/2011/02/19/math6038-week-3/
Last year's maths is easy, this year's maths is hard and next year's maths is impossible.Sun, 11 Mar 2012 19:08:05 +0000
hourly
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By: Graham K
https://jpmccarthymaths.com/2011/02/19/math6038-week-3/#comment-324
Sun, 11 Mar 2012 19:08:05 +0000http://jpmccarthymaths.wordpress.com/?p=2116#comment-324ignore last comment, when re writing matrices for M1 (y) I put down 3 instead of minus 3 for coefficient of Z. I see answer is 1,1,1 as listed above.
Cheers,
Graham
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By: Graham K
https://jpmccarthymaths.com/2011/02/19/math6038-week-3/#comment-323
Sun, 11 Mar 2012 17:52:24 +0000http://jpmccarthymaths.wordpress.com/?p=2116#comment-323Hi JP. Q2 on cramer’s rule gives me X= -1, Y = 1, Z = 1 but these don’t fit when substituted back into equations??
Equations are
x-y =0
-x+y+z =1
x+2y-3z=0
Where am I going wrong here?
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