Q. Evaluate ∫510x−42x2−13x+19dx. Write your answer in simplest form with all logs condensed into a single logarithm (if necessary).
Perform Polynomial Long Division: Perform polynomial long division to simplify the integrand.We need to divide the polynomial 2x2−13x+19 by x−4.
Polynomial Long Division Calculation: Polynomial long division calculation.2x2 divided by x gives 2x. Multiply (x−4) by 2x to get 2x2−8x. Subtract this from 2x2−13x to get −5x. Bring down the +19 to get −5x+19.−5x divided by x gives x2. Multiply (x−4) by x2 to get x5. Subtract this from −5x+19 to get x7.The result of the division is x8 with a remainder of x7.
Rewrite Integral with Result: Rewrite the integral with the result of the division.The integral becomes:∫(2x−5)dx−∫(x−41)dx, evaluated from 5 to 10.
Integrate Polynomial Part: Integrate the polynomial part.The integral of 2x−5 with respect to x is x2−5x.
Integrate Rational Part: Integrate the rational part. The integral of x−41 with respect to x is ln∣x−4∣.
Combine and Evaluate Results: Combine the results and evaluate from 5 to 10. The integral becomes: (x2−5x)−ln∣x−4∣, evaluated from 5 to 10.
Evaluate at Upper Limit: Evaluate the antiderivative at the upper limit x=10. Substitute x=10 into the antiderivative to get: (102−5⋅10)−ln∣10−4∣=(100−50)−ln∣6∣=50−ln(6).
Evaluate at Lower Limit: Evaluate the antiderivative at the lower limit x=5. Substitute x=5 into the antiderivative to get: (52−5×5)−ln∣5−4∣=(25−25)−ln∣1∣=0−ln(1)=0.
Subtract Lower from Upper: Subtract the value at the lower limit from the value at the upper limit.(50−ln(6))−(0)=50−ln(6).
Write Final Answer: Write the final answer in simplest form.The final answer is 50−ln(6).
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