Multivariable Limit Calculator

This multivariable limit calculator helps you compute the limits of functions involving multiple variables.

It is an essential resource for students, mathematicians, and engineers who work with multivariable calculus and need to evaluate the behavior of functions as their input variables approach specific values.

Multivariable limit calculators simplify the process of evaluating these limits, allowing users to input the function and the limit values, and obtain the result quickly and accurately.

They are invaluable tools for students, researchers, and professionals working in fields that involve multivariable calculus.

Multivariable Limit Calculator

Calculate the limit of a function of two variables as (x, y) approaches (a, b).

ExampleLimit ExpressionLimit Value
1lim (x, y) → (0, 0) (x^2 + y^2) / (x^2 + y^2)1
2lim (x, y) → (0, 0) (x^2 * y) / (x^4 + y^2)0
3lim (x, y) → (1, 2) (x^2 - y^2) / (x - y)5
4lim (x, y) → (0, 0) (x^3 * y^2) / (x^4 + y^4)0
5lim (x, y) → (3, -2) (x^2 + y^2 - 5xy) / (x^2 + y^2)1/25
6lim (x, y) → (0, 0) (x^2 * y^3) / (x^4 + y^6)0
7lim (x, y) → (1, 1) (x^2 - 2xy + y^2) / (x^2 + y^2 - 2)1/2
8lim (x, y) → (2, -1) (x^2 + xy - 3y^2) / (x^2 - y^2)-2
9lim (x, y) → (0, 0) (x^3 * y) / (x^4 + y^2)0
10lim (x, y) → (π, e) (sin(x) * cos(y)) / (x^2 + y^2 - π^2 - e^2)0.4141…

In this table, we have provided 10 different examples of multivariable limit expressions and their corresponding limit values calculated using a multivariable limit calculator.

The examples cover a wide range of scenarios, including limits involving polynomial expressions, trigonometric functions, and combinations of different variables.

Some limits evaluate to specific numerical values, while others approach 0 or infinity depending on the behavior of the function and the path taken by the variables.

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Multivariable Limit Calculation Formula

The formula for calculating the limit of a function with multiple variables is more complex than the single-variable case.

The general form is:

lim (x1, x2, ..., xn) → (a1, a2, ..., an) f(x1, x2, ..., xn) = L


  • (x1, x2, …, xn) are the input variables
  • (a1, a2, …, an) are the values that the input variables approach
  • f(x1, x2, …, xn) is the multivariable function
  • L is the limit value, if it exists

Evaluating this limit involves taking the limit of the function as each variable approaches its corresponding value simultaneously.

What is Multivariable Limit?

A multivariable limit is a fundamental concept in multivariable calculus that describes the behavior of a function as its input variables approach specific values simultaneously.

It is a generalization of the familiar single-variable limit concept to functions with multiple input variables.

The intuition behind a multivariable limit is similar to that of a single-variable limit.

As the input variables get closer and closer to their respective values, the function’s output value should approach a specific value, provided the limit exists.

However, unlike single-variable limits, multivariable limits can exhibit more complex behavior due to the interplay between multiple input variables.

The limit may exist in some directions but not others, or it may approach different values depending on the path taken by the input variables.

Multivariable Limit Examples

To better understand multivariable limits, let’s consider a few examples:

  1. Example 1: lim (x, y) → (0, 0) (x^2 + y^2) / (x^2 + y^2) = 1 In this example, the function is (x^2 + y^2) / (x^2 + y^2), and the limit is evaluated as both x and y approach 0 simultaneously. The limit exists and is equal to 1, regardless of the path taken by x and y as they approach (0, 0).
  2. Example 2: lim (x, y) → (0, 0) (x^2y) / (x^4 + y^2) Here, the limit depends on the path taken by x and y as they approach (0, 0). If x approaches 0 faster than y (e.g., y = x^2), the limit is 0. However, if y approaches 0 faster than x (e.g., x = y^2), the limit is infinity. In this case, the limit does not exist.
  3. Example 3: lim (x, y) → (0, 0) (x^2 - y^2) / (x^2 + y^2) In this example, the limit exists and is equal to 0, regardless of the path taken by x and y as they approach (0, 0).

These examples illustrate the richness and complexity of multivariable limits. Evaluating them requires a deep understanding of multivariable calculus concepts, such as continuity, partial derivatives, and path dependence.

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