SOLUTION: 2u+4v+6w+d=-14,-4v+8w+d=-20,8u-8v+4w+d=-36,6u+2v+8w+d=-26 solve this.

Algebra ->  Equations -> SOLUTION: 2u+4v+6w+d=-14,-4v+8w+d=-20,8u-8v+4w+d=-36,6u+2v+8w+d=-26 solve this.      Log On


   

Question 1059939: 2u+4v+6w+d=-14,-4v+8w+d=-20,8u-8v+4w+d=-36,6u+2v+8w+d=-26 solve this.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Use Cramer's rule,

abs%28A%29=-288
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abs%28A%5Bu%5D%29=576
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abs%28A%5Bv%5D%29=-288
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abs%28A%5Bw%5D%29=288
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abs%28A%5Bd%5D%29=2304
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So then,
u=abs%28A%5Bu%5D%29%2Fabs%28A%29=%28-576%29%2F%28-288%29=2
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v=abs%28A%5Bv%5D%29%2Fabs%28A%29=%28-288%29%2F%28-288%29=1
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w=abs%28A%5Bw%5D%29%2Fabs%28A%29=%28288%29%2F%28-288%29=-1
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d=abs%28A%5Bd%5D%29%2Fabs%28A%29=%282304%29%2F%28-288%29=-8