How to calculate limit of a multivariable function?

[Cornel]

Hello,

How to enter and then how to calculate such kind of limits in Mathcad Prime?

[Werner_E · Accepted solution]

[Cornel]

I was thinking that this is done in this way, but I was wondering if exists a more compact way of calculate such kind of limits of multivariable function, like in the manner I shown above, writing one single limit operator (because if my function has 4,5,6, etc variables then I need to write 4,5,6 limit operator)

[Werner_E]

If there would be a "more compact" way, then this way would have to offer an option to define the order.

As you can see below, the order may matter

Of course in your example using "lim" does not make sense as you could as well use substitute or define the variables

[Cornel]

So, for this function:

I can see graphically what the limit is,beside calculating the limit with limit operator:

Then for this function:

How could I see graphically what the limit is?


And for this function:

How could I see graphically what the limit is?

And for this function:

How could I see graphically what the limit is?

[Werner_E]

For your second example use a 3D plot

For the other examples contact PTC and suggest that they should implement 4D and 5D plots 😈