Math Problem Statement
\displaystyle\int\dfrac{3x^3-5x^2+10x-3}{3x+1},dx=
Solution
To solve the integral
we can start by performing polynomial division on the rational function .
Step 1: Perform Polynomial Division
We divide by .
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Divide the leading term of the numerator by the leading term of the denominator , which gives .
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Multiply by , giving .
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Subtract from , resulting in .
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Divide by , which gives .
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Multiply by , giving .
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Subtract from , resulting in .
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Divide by , which gives .
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Multiply by , giving .
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Subtract from , resulting in .
Thus, the polynomial division gives us:
Step 2: Integrate Each Term
Now we integrate term by term:
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We can use substitution for this integral. Let , so . This gives:
Step 3: Combine Results
Combining all terms, we get the final result:
where is the constant of integration.
Do you want more details or have any questions?
Here are 5 related questions to expand on this topic:
- How does polynomial long division work, and why is it useful for integration?
- Can we apply synthetic division for polynomials like these?
- What is the role of substitution in integrals involving logarithms?
- How would the integral change if we had a different denominator, such as ?
- Can you explain partial fraction decomposition and when it's applicable?
Tip: When dealing with rational functions, always consider polynomial division or partial fraction decomposition before integrating!
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Math Problem Analysis
Mathematical Concepts
Integral Calculus
Polynomial Division
Substitution Method
Logarithmic Integration
Formulas
Polynomial Division: f(x) / g(x) = quotient + remainder / g(x)
Substitution: ∫f(u) du = F(u) + C
Logarithmic Integration: ∫(1/u) du = ln|u| + C
Theorems
Fundamental Theorem of Calculus
Logarithmic Integral Theorem
Suitable Grade Level
Undergraduate Level - Calculus 1
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