Question

need help !!

Answer 1

2. Find a * b. (2 points)

a = 9i + 5j, b = 4i + 3j

51
<13, 8>
<36, 15>
-21

Answer 2

no its not i

Answer 3

@dtan5457

Answer 4

is it
\[a \times b ~~~ or~~ a.b\]
i mean vector product or scalar product??

Answer 5

a.b

Answer 6

@rishavraj

Answer 7

i.i = 1 i.j = 0 i.k = 0
j.j = 1 j.i = 0 j.k= 0
k.k = 1 k.i = 0 k.j = 0

Answer 8

<13, 8> ??

Answer 9

how????

Answer 10

see dot product
(ai + bj)*(ci + dj) = ac +bd

Answer 11

its i cap and j cap