Intergration/Differenciatoin (1 Viewer)

[Sphyx]

Is the imaginary unit i or j? It doesn't matter. Mathematics is based on context - usually not too heavily; just enough to ensure there's no ambiguity.

using j for imaginary numbers? never heard of it, or seen in any textbook.
if that was in a question, it would probably throw me off.

 

[Slidey]

Unless they do something stupid like "Letting j^2=-1, blah blah" it won't be tested.

It's just that i is for current. Electrical engineers use j instead.