Practice question · Multiple choice
Optimisation, related rates and accumulation problems all reduce to a small number of calculus moves. How can you tell which move a physical problem needs?
Hints
- Write down what is given and what is wanted, with units.
- The units usually show which direction you have to travel.
Show the answer
B. What the problem asks for relative to what it gives
Why
Matching the given to the wanted is the whole of problem selection. Units make it nearly mechanical: given m/s and wanting m, you integrate.
Practise Integrated single-variable calculus problems
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