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Let T and C respectively be the transver...

Let `T` and `C` respectively be the transverse and conjugate axes of the hyperbola `16x^(2)-y^(2)+64x+4y+44=0`.Then the area of the region above the parabola `x^(2)=y+4`,below the transverse axis `T` and on the right of the conjugate axis `C` is:

A

`4sqrt(6)+(44)/(3)`

B

`4sqrt(6)-(28)/(3)`

C

`4sqrt(6)+(28)/(3)`

D

`4sqrt(6)-(44)/(3)`

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The correct Answer is:
To solve the problem, we need to follow these steps: ### Step 1: Rewrite the equation of the hyperbola The given equation of the hyperbola is: \[ 16x^2 - y^2 + 64x + 4y + 44 = 0 \] First, we rearrange it: \[ 16x^2 + 64x - y^2 + 4y + 44 = 0 \] ### Step 2: Complete the square for \(x\) and \(y\) For \(x\): \[ 16(x^2 + 4x) = 16((x + 2)^2 - 4) = 16(x + 2)^2 - 64 \] For \(y\): \[ - (y^2 - 4y) = -((y - 2)^2 - 4) = -(y - 2)^2 + 4 \] Substituting these into the equation gives: \[ 16(x + 2)^2 - 64 - (y - 2)^2 + 4 + 44 = 0 \] \[ 16(x + 2)^2 - (y - 2)^2 - 16 = 0 \] \[ 16(x + 2)^2 - (y - 2)^2 = 16 \] Dividing through by 16: \[ \frac{(x + 2)^2}{1} - \frac{(y - 2)^2}{16} = 1 \] This is the standard form of the hyperbola: \[ \frac{(x + 2)^2}{1} - \frac{(y - 2)^2}{16} = 1 \] ### Step 3: Identify the transverse and conjugate axes From the standard form, we can identify: - Transverse axis \(T\): \(y = 2\) (the line where \(y\) takes the value of the center) - Conjugate axis \(C\): \(x = -2\) (the line where \(x\) takes the value of the center) ### Step 4: Determine the area of the region We need to find the area above the parabola \(x^2 = y + 4\) (which can be rewritten as \(y = x^2 - 4\)), below the transverse axis \(y = 2\), and to the right of the conjugate axis \(x = -2\). ### Step 5: Find the points of intersection Set \(y = 2\) equal to the parabola: \[ 2 = x^2 - 4 \] \[ x^2 = 6 \] \[ x = \sqrt{6} \quad \text{and} \quad x = -\sqrt{6} \] ### Step 6: Set up the integral for the area The area \(A\) can be calculated as: \[ A = \int_{-2}^{\sqrt{6}} \left(2 - (x^2 - 4)\right) \, dx \] This simplifies to: \[ A = \int_{-2}^{\sqrt{6}} \left(6 - x^2\right) \, dx \] ### Step 7: Calculate the integral Calculating the integral: \[ A = \left[ 6x - \frac{x^3}{3} \right]_{-2}^{\sqrt{6}} \] Calculating at the limits: 1. At \(x = \sqrt{6}\): \[ 6\sqrt{6} - \frac{(\sqrt{6})^3}{3} = 6\sqrt{6} - \frac{6\sqrt{6}}{3} = 6\sqrt{6} - 2\sqrt{6} = 4\sqrt{6} \] 2. At \(x = -2\): \[ 6(-2) - \frac{(-2)^3}{3} = -12 + \frac{8}{3} = -12 + \frac{8}{3} = -\frac{36}{3} + \frac{8}{3} = -\frac{28}{3} \] ### Step 8: Combine results Thus, \[ A = 4\sqrt{6} - \left(-\frac{28}{3}\right) = 4\sqrt{6} + \frac{28}{3} \] ### Final Answer The area of the region is: \[ 4\sqrt{6} + \frac{28}{3} \]
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