Final answer:
To evaluate d/dt(r(g(t))), substitute g(t) into r(t) and then take the derivative.
Step-by-step explanation:
To evaluate d/dt(r(g(t))), we first substitute g(t) into r(t) to get r(g(t)). Then we take the derivative of r(g(t)) with respect to t.
Let's break it down step by step:
- Substitute g(t) into r(t): r(g(t)) = r(8t³)
- Take the derivative of r(g(t)) with respect to t: d/dt(r(g(t))) = d/dr(8t³) * d/dt(8t³)
- Simplify the derivative: d/dt(r(g(t))) = 3r² * 24t²