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Hoa
 2 years ago
find a vector in the direction 2i+j2k that has length 1
Hoa
 2 years ago
find a vector in the direction 2i+j2k that has length 1

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amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1how long is the given vector to begin with?

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1vector = L units to determine the vector of 1 unit, divide both sides by L vector/L = L/L units vector/L = 1 units

Hoa
 2 years ago
Best ResponseYou've already chosen the best response.0we just have the direction and the length of the required vector

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1thats all we need, and some knowledge about what a unit vector is spose to be ....

Hoa
 2 years ago
Best ResponseYou've already chosen the best response.0i have idea like: unit vector of that direction is <2, 1, 2>/sqr(2^2 +1^2+(2)^2 =<2/sqr(5,1/sqr(5),2/sqr(5)> is is right?

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1thats correct :) except maybe check you length again

Hoa
 2 years ago
Best ResponseYou've already chosen the best response.0and use the length 1 multiply to the unit vector to get what we need, is it right?

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1ugh ... 4+1+4 = 9 so sqrt(9) = 3

Hoa
 2 years ago
Best ResponseYou've already chosen the best response.0yeah, you are right, my bad. thanks a lot

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1divide all the vector parts by 3 :)
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