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- "Using arrows of the proper magnitude and direction, sketch each of the following vector functions: (a) iy + jx

I'm reading div grad curl for my math methods class, and I came across this question:

"Using arrows of the proper magnitude and direction, sketch each of the following vector functions: (a) iy + jx, (b) (i + j)/√2

I don't understand the notation. Why is there an y and x next to the i and j in (a), and why doesn't (b) have x or y?

"Using arrows of the proper magnitude and direction, sketch each of the following vector functions: (a) iy + jx, (b) (i + j)/√2

I don't understand the notation. Why is there an y and x next to the i and j in (a), and why doesn't (b) have x or y?