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anonymous
 one year ago
**Will give medals, super easy question** Find the vector
https://gyazo.com/40f9a92a31ece57307589d029648e4ea
anonymous
 one year ago
**Will give medals, super easy question** Find the vector https://gyazo.com/40f9a92a31ece57307589d029648e4ea

This Question is Closed

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1have you learned about vector cross products?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1how far did you get when you tried out the problem? or were you stuck on how to get started?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is it just the cross product?..

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1yes you apply the cross product of the two vectors

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1did you need help computing the cross product?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes, how do i set this up

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1step 1) write out i,j,k along a horizontal row like this dw:1444614782773:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1step 2) write each vector under the i,j,k (line up the corresponding elements) dw:1444614829596:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1we will apply the determinant of this matrix dw:1444614875046:dw denoted by the vertical bars

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1to apply the determinant, copy the first two columns and move them to the right of the matrix dw:1444614908976:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444614942077:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1now we circle the diagonal elements like so dw:1444614990848:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444615040842:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1add up the results 14i + 2j + 6k

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1now we circle these diagonals dw:1444615117544:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1Multiply out the elements in each subgroup dw:1444615147629:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1add up the results 7k+(6i)+4j = 6i+4j+7k

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1the last step is to subtract the two sums (first sum)  (second sum) = (14i+2j+6k)  (6i+4j+7k) (first sum)  (second sum) = 14i+2j+6k + 6i  4j  7k (first sum)  (second sum) = 8i  2j  1k So the cross product of the two vectors is <8, 2, 1>

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0damn, thank you so much, can you help me with one more question though?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1sure, go ahead
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