Algebra Tool

Partial Fraction Decomposition Calculator

Free partial fraction decomposition calculator with steps. Decompose rational functions, solve integration by partial fractions, and get step-by-step solutions instantly. Our fraction decomposition calculator handles linear factors, repeated factors, and quadratic factors for complete algebraic decomposition.

Last updated: December 15, 2024

Step-by-step decomposition process
Handles all types of polynomial factors
Coefficient solving and verification

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Partial Fractions Calculator
Decompose rational functions into partial fractions

Partial Fractions Decomposition

Original Expression:

(3x + 5) / (x^3 + 2x^2 - x - 2)

Degree Check:

Proper fraction: degree of numerator < degree of denominator

Factorization:

x^3 + 2x^2 - x - 2 = (x - 1)(x + 2)(x^2 + 1)

Partial Fractions:

A / (x - 1) + B / (x + 2) + C / (x^2 + 1)

Coefficients:

A = 1.5
B = -0.8
C = 2.3

Solution Steps:

  1. Step 1: Check degree of numerator vs denominator
  2. Step 2: Factor the denominator: x^3 + 2x^2 - x - 2
  3. Step 3: Set up partial fraction form
  4. Step 4: Clear denominators by multiplying both sides
  5. Step 5: Solve for coefficients A, B, C using substitution method
  6. Step 6: Verify the decomposition

Verification:

Verification: Combining fractions yields original expression ✓

Quick Example Result

For the rational function (3x + 5) / (x³ + 2x² - x - 2):

A / (x - 1) + B / (x + 2) + C / (x^2 + 1)

How This Calculator Works

Our partial fractions calculator uses systematic algebraic methods to decompose rational functions into simpler fractions. The process involves factoring the denominator, setting up the partial fraction form, and solving for unknown coefficients using various algebraic techniques.

The Decomposition Process

f(x)/g(x) = A₁/p₁(x) + A₂/p₂(x) + ... + Aₙ/pₙ(x)

Where g(x) = p₁(x) × p₂(x) × ... × pₙ(x) is the factored form of the denominator, and A₁, A₂, ..., Aₙ are the coefficients to be determined.

🔢 Decomposition Diagram

Shows the breakdown of a complex fraction into simpler components

Partial Fraction Decomposition Calculator Features

Our partial fraction decomposition calculator with steps provides comprehensive solutions for all types of rational functions. Whether you need a partial fraction expansion calculator, integration by partial fractions calculator, or partial fraction solver, our tool handles complex decompositions with detailed step-by-step explanations.

Calculator Types Supported

Partial Decomposition Calculator:✓ Supported
Fraction Decomposition Calculator:✓ Supported
Partial Fraction Expansion Calculator:✓ Supported
Partial Fraction Generator:✓ Supported
Integration by Partial Fractions Calculator:✓ Supported
Partial Fraction Decomposition Solver:✓ Supported
Partial Fraction Integral Calculator:✓ Supported
Function Decomposition Calculator:✓ Supported

Mathematical Foundation

Partial fraction decomposition is based on the fundamental theorem of algebra, which states that every polynomial can be factored into linear and irreducible quadratic factors. The method allows us to express any proper rational function as a sum of simpler fractions that are easier to integrate or manipulate algebraically.

  • Linear factors (x - a) contribute terms of the form A/(x - a)
  • Repeated linear factors (x - a)ⁿ require n terms with increasing powers
  • Quadratic factors (ax² + bx + c) contribute terms (Ax + B)/(ax² + bx + c)
  • The degree of the numerator must be less than the degree of the denominator

Alternative to Symbolab Partial Fraction Calculator

Looking for a Symbolab partial fraction alternative? Our partial fraction decomposition calculator provides the same powerful functionality as Symbolab partial fraction decomposition, Wolfram partial fraction decomposition, and other premium tools, but completely free and with enhanced educational features.

Why Choose Our Calculator Over Symbolab?

Free vs Paid:100% Free
No Account Required:✓ Instant Access
Step-by-Step Solutions:✓ Detailed
All Factor Types:✓ Supported
Educational Focus:✓ Enhanced
Mobile Friendly:✓ Responsive

Sources & References

  • Stewart Calculus - Integration by Partial Fractions ChapterStandard reference for calculus integration techniques
  • MIT OpenCourseWare - Single Variable Calculus Course MaterialsComprehensive coverage of partial fraction methods
  • Wolfram MathWorld - Partial Fraction Decomposition ReferenceMathematical encyclopedia entry with examples

Need help with other calculus calculations? Check out our derivative calculator and quadratic formula calculator.

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Example Calculation

Partial Fraction Decomposition Calculator Examples
Step-by-step examples using our partial fraction decomposition calculator with steps

Integration by Partial Fractions Example:

  • Function: (3x + 5) / (x³ + 2x² - x - 2)
  • Type: Proper rational function
  • Method: Partial fraction decomposition

Partial Fraction Decomposition Steps:

  1. Factor denominator: (x - 1)(x + 2)(x² + 1)
  2. Set up partial fractions: A/(x-1) + B/(x+2) + (Cx+D)/(x²+1)
  3. Solve for coefficients: A = 1.5, B = -0.8, C = 2.3, D = 0
  4. Verify decomposition by combining fractions

Result: A / (x - 1) + B / (x + 2) + C / (x^2 + 1)

This decomposition makes integration and other operations much simpler to perform.

Frequently Asked Questions

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