Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
What is the area enclosed by the curves and ?
A
B
C
D
Verified step by step guidance
1
Step 1: Identify the points of intersection between the two curves y = x^3 - 8x^2 + 18x - 5 and y = x + 5. To do this, set the equations equal to each other: x^3 - 8x^2 + 18x - 5 = x + 5. Solve for x to find the points where the curves intersect.
Step 2: Once the points of intersection are determined, denote them as x = a and x = b (where a and b are the x-values of the intersection points). These will serve as the limits of integration for calculating the area.
Step 3: Set up the integral to find the area between the curves. The area is given by the integral of the difference between the upper curve and the lower curve over the interval [a, b]. In this case, the integral is: ∫[a to b] ((x + 5) - (x^3 - 8x^2 + 18x - 5)) dx.
Step 4: Simplify the integrand. Combine like terms to rewrite the integrand as: ∫[a to b] (-x^3 + 8x^2 - 17x + 10) dx.
Step 5: Compute the definite integral by finding the antiderivative of the integrand (-x^3 + 8x^2 - 17x + 10) and evaluating it at the limits of integration (x = a and x = b). Subtract the value of the antiderivative at x = a from its value at x = b to obtain the area.