(a) To find the volume of the solid of revolution, we use the formula:
\(V = \pi \int_{1}^{\frac{3}{2}} y^2 \, dx\)
Substitute \(y = \frac{4}{(2x-1)^2}\):
\(V = \pi \int_{1}^{\frac{3}{2}} \left( \frac{4}{(2x-1)^2} \right)^2 \, dx = \pi \int_{1}^{\frac{3}{2}} \frac{16}{(2x-1)^4} \, dx\)
Integrate:
\(\pi \left[ -\frac{16}{3 \times 2x(2x-1)^3} \right]_{1}^{\frac{3}{2}}\)
Calculate the definite integral:
\(\pi \left( \frac{112}{48} \right) = \frac{11}{6} \pi\)
(b) Differentiate \(y = \frac{4}{(2x-1)^2}\) to find the gradient at \(B\):
\(\frac{dy}{dx} = -8(2x-1)^{-3} \times 2\)
At \(B\), the gradient is \(-2\).
Equation of the tangent at \(B\):
\(y - 1 = -2\left(x - \frac{3}{2}\right)\)
Equation of the normal at \(B\):
\(y - 1 = \frac{1}{2}\left(x - \frac{3}{2}\right)\)
The tangent crosses the x-axis at 2, and the normal crosses the x-axis at \(\frac{1}{2}\).
Calculate the area of the triangle:
\(\text{Area} = \frac{1}{2} \times \left(2 - \frac{1}{2}\right) \times 1 = \frac{5}{4}\)