i was learning about multi variable calculus. But, i didn't quite understand what does it mean. Let me demonstrate what i mean:
In single variable calculus, we had an input that gave us an output. For example, y=x2, we have one input, i.e x, that gave rise to one output, i.e y, by squaring the x. So, if we had x as 2, we would have y as 4, and then we would just plot (2,4) on a 2-dimensional plane. But, I am not able to think multi variable calculus as the way i just showed. I mean, are we applying 2 seperate functions to an input variable to get 2 variables, i.e, are we doing this: (y,z)=f(x),g(x), or what?
