## Introduction to Integration by Parts Calculator:

Integration by parts calculator with steps is an online tool that helps you find the integral of a **function multiplied by two** functions. Our tool evaluates the product of different types of functions like inverse trigonometric, logarithmic, and exponential functions.

The integrate by parts calculator is a beneficial tool for students and professionals who want to learn the concept of integration by parts method but do not have access to a tutor. It provides you step by step solutions that helps you to easily grab how the working method.

## What is Integration by Parts?

Integration by parts is a method that is used to find the integration of two different product's functions. The first function is f(x) the **second function** is g(x) and the product of the function is ∫f(x) . g(x)dx. It is known as the product chain rule process or integral by parts method.

This method is used for integral problems that are the combination of two functions like the trigonometric and algebraic functions, inverse trigonometric and logarithmic, algebraic or exponential functions whose integral formula is not given directly.

## Formula Used by Integral by Parts Calculator:

Integration by parts formula splits the given function f(x) and g(x) into two so that it become easy to integrate with respect to the given variable. The **integration by parts formula** used by the Integration by parts calculator is,

$$ \int u\; v\; dx \;=\; u \int v\; dx - \int \biggr(\frac{du}{dx} \int v\; dx \biggr) dx $$

Whereas,

u = first function f(x) is an integral function

v = second function g(x) is a derivation function

## Calcuation using Integrate by Parts Calculator:

The integral by parts calculator uses the integration by parts formula to **integrate the product** of two functions. You can use this tool to calculate complicated problems and get the solution without manual calculations. Let's see how our tool evaluates the integration by parts problems.

$$ \int u . vdx \;=\; uv − \int v . \frac{d}{dx} (u) dx $$

**Step 1**:

Determine the given function for integration.

**Step 2**:

Choose u and v using LIATE order to make the integration process simpler. Select v as an integral function and u as a derivational function.

**Step 3**:

Compute the differentiate of u: du = u′dx and compute the integral of v as dv: $$ v \;=\; \int v\; dv $$

**Step 4**:

Apply the integration by parts formula and substitute u, v, du, and dv into the integration by parts formula: $$ \int uv\; dx \;=\; uv − \int v\; u . dx\; dx $$

**Step 5**:

Simplify it to evaluate the solution of the integral ∫ function.

## Solved Example of Integration by Parts:

Let us take an **example with solution** of integration by parts to understand how the integration by parts calculator with steps gives an accurate solution.

### Example: Find the integral,

$$ \int x^2 e^{3x} dx $$

**Solution**:

Using LIATE choose u = x^{2} and dv = e^{3x} dx. Thus du = 2x dx and v = ∫ e^{3x} dx = (⅓)e^{3x}. Therefore,

$$ u \;=\; x^2 $$

$$ du \;=\; 2x\; dx $$

$$ dv \;=\; e^{3x} dx $$

$$ v \;=\; \int e^{3x} dx = \frac{1}{3}e^{3x} $$

Substitute the u and v values in this formula,

$$ \int u\; v\; dx \;=\; u \int v\; dx - \int \biggr( \frac{du}{dx} \int u\; dx \biggr) dx $$

$$ \int x^2 e^{3x} dx \;=\; \frac{1}{3}x^2 e^{3x} - \int \frac{2}{3} xe^{3x} dx $$

To further solve the integration again, apply the integral by parts formula,

$$ u \;=\; x $$

$$ du \;=\; dx $$

$$ dv \;=\; \frac{2}{3}e^{3x} dx $$

$$ v \;=\; \int \frac{2}{3} e^{3x} dx \;=\; \frac{2}{9} e^{3x} $$

Again substitute the above u and v values in the formula,

$$ \int x^2 e^{3x}\; dx \;=\; \frac{1}{3}x^2 e^{3x} - \biggr(\frac{2}{9}xe^{3x} - \int \frac{2}{9} e^{3x} dx \biggr) $$

After solving we get,

$$ \int x^2 e^{3x} dx \;=\; \frac{1}{3}x^2 e^{3x} - \frac{2}{9} xe^{3x} + \frac{2}{27}e^{3x} + C $$

**Example** : Evaluate the following,

$$ \int arctan\; x\; dx $$

**Solution**:

Here in the given example arctan x cannot be solved alone so we assume 1 is multiplied with arctanx which means f(x) = 1 and g(x) = arctanx. Let's take v = 1 as the first function (integral) or u = arctan x and dv = dx as the derivative function then,

$$ du \;=\; \frac{1}{(1+x^2)} dx\; and\; v \;=\; x $$

Put the values in the formula of integration by parts that is,

$$ \int u\; v\; dx \;=\; u \int v\; dx - \int \biggr( \frac{du}{dx} \int v\; dx \biggr) dx $$

$$ \int arctan\; x\; dx \;=\; x\; arctan\; x - \int \frac{x}{1 + x^2} dx $$

To find the integral, use the u-substitution method for the direct solution of the integral and take u = 1 + x^{2}, get du = 2x dx.

$$ \int arctan x\; dx \;=\; x\; arctan\; x - \int \frac{x}{1 + x^2} dx $$

Taking u = 1 + x^{2}, we get du = 2x dx

$$ \int arctan\; x\; dx \;=\; x\; arctan\; x - \frac{1}{2} \int \frac{1}{u} du $$

Therefore the solution is,

$$ \int arctan\; x\; dx \;=\; x\; arctan\; x - ln(1 + x^2) + C $$

## How to Use Integration by Parts Calculator?

The integrate by parts calculator has an easy-to-use interface, so you can easily use it to evaluate the integral of a given function. Before adding the input for the solutions of given integral problems, you must follow some simple steps. These steps are:

- Add the integration by parts problem that you want to evaluate in the input box.
- Choose the variable of integral from the respective field.
- Recheck your input value of integration before hitting the calculate button of integral by parts calculator.
- When you click on the “
**calculate**” button you get the desired result of your given integration by parts problem. - If you want to try out our ibp calculator to check its accuracy then use the load example option.
- The “Recalculate” button brings you back to a new page for solving more integration by parts questions.

## Final Result of the Integration by Parts Solver:

Integration by parts calculator with steps gives you the **solution** to a given integration problem when you give the input and it provides you with solutions. It may contain as:

**Result Option**:

When you can click on the result option, it provides you with a solution of integration by parts questions.

**Possible Step**:

When you click on the possible steps option it gives you step by step solution of integration by parts problem.

## Benefits of Using IBP Calculator:

The integration by parts solver gives you multiple benefits whenever you use it to calculate integration by parts questions and gives its solution immediately. These benefits are:

- Integral calculator by parts
**saves the time and effort**that you consume in manual calculation of solving complex integration by-parts questions. - It is a free-of-cost tool that provides you with a solution for the given integral problem without charging anything.
- By parts integration calculator is an adaptive tool that allows you to evaluate different combinations of functions (logarithmic, exponential, algebraic, inverse trigonometry, etc) in integration by parts problems.
- You can use this integral by parts calculator for practice to get a strong hold on this concept.
- It keeps you away from doing manual calculations of integration by part problems and gives an accurate solution
- Integration by parts calculator with steps can operate on an online platform which means you can use it anytime.