A curve is defined by $\frac{dy}{dx} = 3\sqrt{4x + 5}$. The points $(1,9)$ and $(5,a)$ are on the curve.
(main)[5]
Determine the value of $a$.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Integrate so as to obtain a form $k(4x+5)^{\tfrac{3}{2}}$” …