Question

Determine "m" such that the two vectors are orthogonal. 4mi=j, 9mi-25j

Answer 1

(4mi+j).(9mi-25j)=0 (dot product)
this gives u m=5/6

Answer 2

and also m=-5/6

Answer 3

Do you mind explaining how you did the problem? please.

Answer 4

For two vectors to be orthogonal their dot product must be 0.

Answer 5

Blah. dyslexic sorry.

Answer 6

I understand it no that I can see it, there were no examples in my
book. Thank you!

Answer 7

\[<4m,1>\cdot <9m,-25> = 0\]\[\implies 36m^2 -25 = 0\]\[\implies 36m^2 = 25\]\[\implies m^2 = {25 \over 36} \implies m = \pm {5\over 6}\]

Answer 8

There, that one is correct.