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What is i and j?? (Vectors)

Is i the x-axis or the POS x-axis?
Is j the y-axis or the POS y-axis?
(edited 2 years ago)
Reply 1
Avatar for Hii84y4
Hii84y4
OP
11
Any help is appreciated :smile:
Reply 2
Avatar for mqb2766
mqb2766
21
Original post by Hii84y4
Is i the x-axis or the POS x-axis?
Is j the y-axis or the POS y-axis?

Similar to your other post.
i is usually the unit vector along the positive x-axis
j is usually the unit vector along the positive y-axis
So
3i + 4j
is equivalent to (3,4), and
-3i -4j
is equivalent to (-3,-4)
(edited 2 years ago)
Original post by Hii84y4
Is i the x-axis or the POS x-axis?
Is j the y-axis or the POS y-axis?


i is one step into the positive horizontal direction.

j is one step into the positive vertical direction.
Reply 4
Avatar for Hii84y4
Hii84y4
OP
11
Original post by RDKGames
i is one step into the positive horizontal direction.

j is one step into the positive vertical direction.

So is

-i one step into the negative horizontal direction.

-j one step into the negative vertical direction.
(edited 2 years ago)
Original post by Hii84y4
So is

i one step into the negative horizontal direction.

j one step into the negative vertical direction.

No?

Replace i,j with -i,-j then you would be correct.
Reply 6
Avatar for Hii84y4
Hii84y4
OP
11
Original post by RDKGames
No?

Replace i,j with -i,-j then you would be correct.

I forgot the minus signs:s-smilie:

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