Home
Class 12
MATHS
Find the area between x-axis and the cur...

Find the area between x-axis and the curve `y=(x-1)^(2)-25`.

Text Solution

AI Generated Solution

The correct Answer is:
To find the area between the x-axis and the curve \( y = (x-1)^2 - 25 \), we will follow these steps: ### Step 1: Find the points of intersection with the x-axis To find the points where the curve intersects the x-axis, we set \( y = 0 \): \[ (x-1)^2 - 25 = 0 \] ### Step 2: Solve the equation Rearranging the equation gives: \[ (x-1)^2 = 25 \] Taking the square root of both sides, we have: \[ x - 1 = 5 \quad \text{or} \quad x - 1 = -5 \] This leads to: \[ x = 6 \quad \text{or} \quad x = -4 \] ### Step 3: Set up the integral for the area The area \( A \) between the curve and the x-axis from \( x = -4 \) to \( x = 6 \) can be found using the integral: \[ A = \int_{-4}^{6} |(x-1)^2 - 25| \, dx \] ### Step 4: Determine the function's behavior Next, we need to determine where the curve is above or below the x-axis. We can evaluate the function at a point in the interval, say \( x = 0 \): \[ y = (0-1)^2 - 25 = 1 - 25 = -24 \] Since \( y < 0 \) at \( x = 0 \), the curve is below the x-axis between \( x = -4 \) and \( x = 6 \). Thus, we can drop the absolute value: \[ A = \int_{-4}^{6} -((x-1)^2 - 25) \, dx \] ### Step 5: Simplify the integral This simplifies to: \[ A = \int_{-4}^{6} (25 - (x-1)^2) \, dx \] ### Step 6: Expand the integrand Expanding \( (x-1)^2 \): \[ (x-1)^2 = x^2 - 2x + 1 \] Thus, the integrand becomes: \[ A = \int_{-4}^{6} (25 - (x^2 - 2x + 1)) \, dx = \int_{-4}^{6} (24 + 2x - x^2) \, dx \] ### Step 7: Integrate Now we can integrate term by term: \[ A = \int_{-4}^{6} (24 + 2x - x^2) \, dx = \left[ 24x + x^2 - \frac{x^3}{3} \right]_{-4}^{6} \] ### Step 8: Evaluate the definite integral Calculating at the bounds: 1. At \( x = 6 \): \[ 24(6) + (6)^2 - \frac{(6)^3}{3} = 144 + 36 - 72 = 108 \] 2. At \( x = -4 \): \[ 24(-4) + (-4)^2 - \frac{(-4)^3}{3} = -96 + 16 + \frac{64}{3} = -80 + \frac{64}{3} = -\frac{240}{3} + \frac{64}{3} = -\frac{176}{3} \] ### Step 9: Combine the results Thus, the area \( A \) is: \[ A = 108 - \left(-\frac{176}{3}\right) = 108 + \frac{176}{3} = \frac{324}{3} + \frac{176}{3} = \frac{500}{3} \] ### Final Result The area between the x-axis and the curve \( y = (x-1)^2 - 25 \) is: \[ \boxed{\frac{500}{3}} \]
Promotional Banner

Similar Questions

Explore conceptually related problems

Find the area between the x-axis and the curve y = sqrt(1+cos4x), 0 le x le pi .

Find the area between the x-axis and the curve y=sinx from x=0 to x=2pi

Find the area between x-axis and the curve y=sinx , from x=0 to x=pi .

Find the area between the curve y=x and y=x^2

Find the area bounded by the y-axis and the curve x = e^(y) sin piy between y = 0, y = 1.

Find the area between the curves y = x and y=x^2 .

Find the area enclosed between the curves y=x^(2)+1,y=2x-2 and the ordinates x=-1 and x = 2

Find the area of the region bounded by the curve y= x^(2)-2x , the x-axis and the lines x=1 and x= -1

Find the area enclosed between the curves y=x^(2),y=2x-x^(2)

Find the area enclosed between the curves y^(2)=2x,y=4x-1