Can I plot a line with plot3d using single x,y points?

plot3d([1,2],x=-1..1,y=-1..2); Gives me two planes at x=1 and 2. Can plot3d instead give me a line through that point?

How do I create a list in maple. ie: numbers from 1 to 5 and print them like this:

1

2

3

4

5

instead of

1 2 3 4 5

I am trying to expand a derivative using the chain rule and sitching the order of differentiation.

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