Q. What is the area of the region bound by the graphs of f(x)=x−2, g(x)=14−x, and x=2?Choose 1 answer:(A) 619(B) 299(C) 2151(D) 245
Find Intersection Points: First, find the intersection points of f(x) and g(x) to determine the limits of integration.Set f(x)=g(x): x−2=14−x.
Square Both Sides: Square both sides to get rid of the square root: (x−2)2=(14−x)2. This gives us x−2=(14−x)2.
Expand and Rearrange Equation: Expand the right side: x−2=196−28x+x2.
Factor and Solve for x: Rearrange the equation to form a quadratic equation: x2−29x+198=0.
Set Up Integral: Factor the quadratic equation: (x−11)(x−18)=0.
Calculate Integral: Solve for x: x=11 or x=18. These are the intersection points, so the limits of integration are from x=2 to x=11.
Integrate First Part: Set up the integral to find the area between the curves from x=2 to x=11: ∫211(14−x−x−2)dx.
Evaluate First Integral: Calculate the integral: ∫211(14−x)dx−∫211x−2dx.
Integrate Second Part: Integrate the first part: ∫211(14−x)dx=[14x−2x2] from 2 to 11.
Evaluate Second Integral: Evaluate the first integral at the bounds: 14⋅11−2112 - 14⋅2−222.
Subtract and Calculate Final Area: Calculate the values: (154−60.5)−(28−2).
Subtract and Calculate Final Area: Calculate the values: 154−60.5 - 28−2.Simplify the result: 93.5−26=67.5.
Subtract and Calculate Final Area: Calculate the values: (154−60.5)−(28−2).Simplify the result: 93.5−26=67.5.Integrate the second part: ∫211x−2dx.Letu=x−2,thendu=dx and change the limits accordingly.
Subtract and Calculate Final Area: Calculate the values: (154−60.5)−(28−2).Simplify the result: 93.5−26=67.5.Integrate the second part: ∫211x−2dx. Let u=x−2, then du=dx and change the limits accordingly.The new limits are from u=0 to u=9. Calculate the integral: ∫09udu.
Subtract and Calculate Final Area: Calculate the values: (154−60.5)−(28−2).Simplify the result: 93.5−26=67.5.Integrate the second part: ∫211x−2dx. Let u=x−2, then du=dx and change the limits accordingly.The new limits are from u=0 to u=9. Calculate the integral: ∫09udu.Integrate: ∫09udu=[32∗u23] from 0 to 93.5−26=67.50.
Subtract and Calculate Final Area: Calculate the values: 154−60.5 - 28−2. Simplify the result: 93.5−26=67.5. Integrate the second part: extstyle∫211x−2dx. Let u=x−2, then du=dx and change the limits accordingly. The new limits are from u=0 to u=9. Calculate the integral: extstyle∫09udu. Integrate: extstyle∫09udu=[32∗u23]09. Evaluate the integral at the bounds: 28−20.
Subtract and Calculate Final Area: Calculate the values: 154−60.5 - 28−2. Simplify the result: 93.5−26=67.5. Integrate the second part: extstyle∫211x−2dx. Let u=x−2, then du=dx and change the limits accordingly. The new limits are from u=0 to u=9. Calculate the integral: extstyle∫09udu. Integrate: extstyle∫09udu=[32∗u23] from 28−20 to 28−21. Evaluate the integral at the bounds: 28−22. Calculate the values: 28−23.
Subtract and Calculate Final Area: Calculate the values: (154−60.5)−(28−2).Simplify the result: 93.5−26=67.5.Integrate the second part: ∫211x−2dx. Let u=x−2, then du=dx and change the limits accordingly.The new limits are from u=0 to u=9. Calculate the integral: ∫09udu.Integrate: ∫09udu=[32∗u23] from 0 to 93.5−26=67.50.Evaluate the integral at the bounds: 93.5−26=67.51.Calculate the values: 93.5−26=67.52.Simplify the result: 93.5−26=67.53.
Subtract and Calculate Final Area: Calculate the values: (154−60.5)−(28−2). Simplify the result: 93.5−26=67.5. Integrate the second part: ∫211x−2dx. Let u=x−2, then du=dx and change the limits accordingly. The new limits are from u=0 to u=9. Calculate the integral: ∫09udu. Integrate: ∫09udu=[32∗u23] from 0 to 93.5−26=67.50. Evaluate the integral at the bounds: 93.5−26=67.51. Calculate the values: 93.5−26=67.52. Simplify the result: 93.5−26=67.53. Subtract the second integral from the first to find the total area: 93.5−26=67.54.
Subtract and Calculate Final Area: Calculate the values: (154−60.5)−(28−2).Simplify the result: 93.5−26=67.5.Integrate the second part: ∫211x−2dx. Let u=x−2, then du=dx and change the limits accordingly.The new limits are from u=0 to u=9. Calculate the integral: ∫09udu.Integrate: ∫09udu=[32∗u23] from 0 to 93.5−26=67.50.Evaluate the integral at the bounds: 93.5−26=67.51.Calculate the values: 93.5−26=67.52.Simplify the result: 93.5−26=67.53.Subtract the second integral from the first to find the total area: 93.5−26=67.54.Calculate the final area: 93.5−26=67.55.
More problems from Operations with rational exponents