`y_1 = x^2 - 6x , y_2 = 0` Set up the definite integral that gives the area of the region

Expert Answers

An illustration of the letter 'A' in a speech bubbles

Let us first find the bounds of integration i.e. the points where the two points intersect each other. To do that we need to solve the following system of equations.



Substituting the second equation into the first yields



`x_(1,2)=pm sqrt6`

If we now look at the image below, we see that the whole region is below `x`-axis. This means that the integral will be negative so to calculate the area we need to put the minus sign in front of the integral (we could also put the integral in absolute value or we could simply switch lower and upper bounds with each other).

`A=-int_-sqrt6^sqrt6 (x^2-6)dx`   

Let us now calculate the area of the region.


Therefore, the area of the region bounded by the parabola `y_1=x^2-6` and the line `y_2=0` is `8sqrt6.`                                                                                    

See eNotes Ad-Free

Start your 48-hour free trial to get access to more than 30,000 additional guides and more than 350,000 Homework Help questions answered by our experts.

Get 48 Hours Free Access
Image (1 of 1)
Approved by eNotes Editorial Team