scottdave said:The way that PhysicsForums works for homework problems: you provide what you have attempted, then we will guide you to a solution.
That should have solved it immediately. Please post your working. Maybe you did not understand what your equation was telling you.hnnhcmmngs said:tried using ... polar equations
The limit of a multivariable function is the value that the function approaches as the input variables approach a specific point. It can also be thought of as the value that the function "approaches" or "tends to" as the input variables get closer and closer to a certain point.
The limit of a multivariable function is calculated by plugging in the values of the input variables into the function and observing the resulting output. As the input variables get closer and closer to the specific point, the resulting output values should also get closer and closer to a certain value, which is the limit.
The limit of a multivariable function is important because it helps us understand the behavior of the function at a specific point. It can also help us determine the continuity of a function and whether it has any discontinuities or holes at that point.
Yes, the limit of a multivariable function can exist even if the function is not defined at that point. This is because the limit is based on the behavior of the function as the input variables approach the specific point, not the actual value of the function at that point.
The limit of a multivariable function can be affected by the number of input variables, as it can become more complex to calculate and may involve multiple limits. However, the basic concept of approaching a specific point still applies, regardless of the number of input variables.