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Mathematics 8 Online
OpenStudy (anonymous):

find the unit vector in the direction of u write in linear combination of the standard unit vectors i and j

OpenStudy (anonymous):

i got 1/sqrt26i+5/sqrt26j

OpenStudy (dumbcow):

is the vector u <1,5> ? if it is then you are right, except the sqrt is in the denominator

OpenStudy (anonymous):

yes i forgot to say that

OpenStudy (anonymous):

and heres the multiple choice A.1/6i+5/6j B.1/sqrt26i+5/sqrt26j C. i+j D. 1/26i + 5/26j

OpenStudy (dumbcow):

oh in that case you are right, looks like they didn't rationalize the denominator

OpenStudy (anonymous):

oh what would it be if i rationalized the denominator?

OpenStudy (dumbcow):

sqrt26/26 (i +5j)

OpenStudy (anonymous):

|dw:1329164078028:dw|

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