Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Application of Integrals

Question:

The curve y = x2 - 7x + 10 intersects the x-axis at the points A and B. Then the area bounded by the curve and the line AB is : 

Options:

9/2

4

6

2

Correct Answer:

9/2

Explanation:

The curve y = x2 - 7x + 10 intersects the x-axis at the points A(2, 0) and B(5, 0). 

hence the required area : A = - \(\int_{2}^{5}d\)x y 

A =  - \(\int_{2}^{5}d\)x [x2 - 7x + 10]

  = -\(|\frac{1}{3}x^3 - \frac{7}{2}x^2 + 10x|_2^5\)

  = \(\frac{9}{2}\)