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## Limit Calculator With Steps

Limit calculator helps you find the limit of a function with respect to a variable. This limits calculator is an online tool that assists you in calculating the value of a function when an input approaches some specific value.

Limit calculator with steps shows the step-by-step solution of limits along with a plot and series expansion. It employs all limit rules such as sum, product, quotient, and L'hopital's rule to calculate the exact value.

You can evaluate limits with respect to $$\text{x, y, z, v, u, t}$$ and $$w$$ using this limits calculator.

That’s not it. By using this tool, you can also find,

1. Right-hand limit (+)
2. Left-hand limit (-)
3. Two-sided limit

## How does the limit calculator work?

To evaluate the limit using this limit solver, follow the below steps.

• Enter the function in the given input box.
• Select the concerning variable.
• Enter the limit value.
• Choose the side of the limit. i.e., left, right, or two-sided.
• Hit the Calculate button for the result.
• You will find the answer below the tool.
• Use the Reset button to enter new values and the Keypad icon  to enter additional values.

## What is a limit in Calculus?

The limit of a function is the value that f(x) gets closer to as x approaches some number. Limits can be used to define the derivatives, integrals, and continuity by finding the limit of a given function. It is written as:

$$\lim _{x\to a}\:f\left(x\right)=L$$

If f is a real-valued function and a is a real number, then the above expression is read as,

the limit of  f of x as x approaches a equals L.

## How to find a limit? – With steps

Limits can be applied as numbers, constant values (π, G, k), infinity, etc. Let’s go through a few examples to learn how to calculate limits.

Example - Right-hand Limit

$$\lim _{x\to \:2^+}\frac{\left(x^2+2\right)}{\left(x-1\right)}$$

Solution:

A right-hand limit means the limit of a function as it approaches from the right-hand side.

Step 1: Apply the limit x➜2 to the above function. Put the limit value in place of x.
$$\lim \:_{x\to 2^+}\frac{\left(x^2+2\right)}{\left(x-1\right)}$$

$$=\frac{\left(2^2+2\right)}{\left(2-1\right)}$$

Step 2: Solve the equation to reach a result.

$$=\frac{\left(4+2\right)}{\left(2-1\right)} =\frac{6}{1} =6$$

Step 3: Write the expression with its answer.

$$\lim \:_{x\to \:\:2^+}\frac{\left(x^2+2\right)}{\left(x-1\right)}=6$$

Graph

Example - Left-hand Limit

$$\lim _{x\to 3^-}\left(\frac{x^2-3x+4}{5-3x}\right)$$

Solution:

A left-hand limit means the limit of a function as it approaches from the left-hand side.

Step 1: Place the limit value in the function.

$$\lim _{x\to 3^-}\left(\frac{x^2-3x+4}{5-3x}\right)$$

$$=\frac{\left(3^2-3\left(3\right)+4\right)}{\left(5-3\left(3\right)\right)}$$

Step 2: Solve the equation further.

$$=\frac{\left(9-9+4\right)}{\left(5-9\right)}$$

$$=\frac{\left(0+4\right)}{\left(-4\right)} =\frac{4}{-4} =-1$$

Step 3: Write down the function as written below.

$$\lim \:_{x\to \:3^-}\left(\frac{x^2-3x+4}{5-3x}\right)=-1$$

Graph

Example - Two-sided Limit

$$\lim _{x\to 5}\left(cos^3\left(x\right)\cdot sin\left(x\right)\right)$$

Solution:

A two-sided limit exists if the limit coming from both directions (positive and negative) is the same. It is the same as a limit.

Step 1: Substitute the value of the limit in the function.
$$\lim _{x\to 5}\left(cos^3\left(x\right)\cdot sin\left(x\right)\right)$$

$$=cos^3\left(5\right)\cdot \:sin\left(5\right)$$

Step 2: Simplify the equation as we did in previous examples.

$$\lim _{x\to 5}\left(cos^3\left(x\right)\cdot sin\left(x\right)\right)$$

$$=cos^3\left(5\right)\:sin\left(5\right)$$

Step 3: The above equation can be considered as the final answer. However, if you want to solve it further, solve the trigonometric values in the equation.

$$=\frac{1141}{50000}\cdot \:-\frac{23973}{25000} =-\frac{10941}{500000}$$

$$\lim \:\:_{x\to \:\:5}\left(cos^3\left(x\right)\cdot \:\:sin\left(x\right)\right)$$

$$=-0.021882$$

Graph

## FAQ’s

Does sin x have a limit?

Sin x has no limit. It is because, as x approaches infinity, the y-value oscillates between 1 and −1.

What is the limit of e to infinity?

The limit of e to the infinity (∞) is e.

What is the limit as e^x approaches 0?

The limit as e^x approaches 0 is 1.

What is the limit as x approaches the infinity of ln(x)?

The limit as x approaches the infinity of ln(x) is +. The limit of this natural log can be proved by reductio ad absurdum.

• If x >1ln(x) > 0, the limit must be positive.
• As ln(x2) − ln(x1) = ln(x2/x1). If x2>x1, the difference is positive, so ln(x) is always increasing.
• If lim x→∞ ln(x) = M R, we have ln(x) < M x < eM, but x→∞ so M cannot be in R, and the limit must be +∞.

## References

• What is limit calculus? Study.com | Take Online Courses. Earn College Credit. Research Schools, Degrees & Careers.
• Limits: A graphical approach - concept - calculus video by Brightstorm.

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