Hi everybody,

E={(x;y;z) / x=y=2z}

I must show that and (x;y;z) and (x';y';z') from E: (x;y;z)+ (x';y';z') E and .(x;y;z) E.

Can you help me please???

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- Apr 21st 2010, 12:09 PM #1

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- Apr 21st 2010, 12:33 PM #2

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- Apr 21st 2010, 12:51 PM #3

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