2.
\includegraphics[max width=\textwidth, alt={}, center]{27703044-8bb3-4809-9454-ae6774fec060-1_485_808_973_520}
The diagram shows the curve with equation \(y = \sqrt { 4 x - 1 }\).
- Use the trapezium rule with four intervals of equal width to estimate the area of the shaded region bounded by the curve, the \(x\)-axis and the lines \(x = 1\) and \(x = 3\).
- Explain briefly how you could use the trapezium rule to obtain a more accurate estimate of the area of the shaded region.