When should I use $=$ and $\equiv$?
I heard about this in our calculus class years ago. I was actually not in that class when the processor explained this. 95% of engineering student do not know about this operator. Trying to recall, what did it mean? And is it used standard in Math classes? I think it means approximately equal to.
I am not 100% sure about the syntax.
Edit: Originally I asked for === operator