2025 RI P1 Q2

2025 RI P1 Q2

4 marks

The point \(P\) travels along the curve \(C\) with equation \(y = x \sin^{-1} x\), \(-1 < x < 1\). Let the gradient of the curve \(C\) at the point \(P\) be \(m\).

If the \(x\)-coordinate of \(P\) is increasing at the rate of \(9\) units per second when \(x = \frac{1}{2}\), find the exact value of the rate at which \(m\) is changing at this instant.[4]

Video Solution:

Video Solution

Video solution locked

A free account saves your progress; this video needs a course plan.

Solution:

Solution locked

680+ questions here come with free worked solutions. A free account saves your questions and progress; this one needs a course plan.

Answer:\(14\sqrt3\text{ units per second}\).

Need help? Join our JC Math tuition classes.

Learn more