deena7

12.09.2019 • 

Mathematics

Let e1 = (1; 0; 0), e2 = (0; 1; 0), and e3 = (0; 0; 1). show that if (i; j; k) is equal to (1; 2; 3) or (2; 3; 1) or (3; 1; 2) then ei x ej = ek. then show that if (i; j; k) is equal to (3; 2; 1) or (2; 1; 3) or (1; 3; 2) then ei x ej = -ek. (note: this problem is really looking at left and right handed coordinate systems.)

Ответ:

tayshhah3945

02.12.2021

Mathematics

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Step-by-step explanation:

Both of them finish in an hour 1/2 of the job.

Bert finishes 1/3 of the job in an hour.

So Ernie can do in an hour 1/2-1/3=1/6 of the job.

This way we understand that Ernie needs 6 hours to finish the job.

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