Core Pure - Volumes Of Revolution (2)

Question 1

What is the only different thing with volumes of revolution?

Answer 1

You do it with parametric equations:
You also need to change the bounds

Question 2

What are the new bounds normally in parametric volumes of revolution?

Answer 2

The domain of the parametric variable

Question 3

In parametric integration, why might you get a negative answer?

Answer 3

The bounds are the wrong way around (its not always obvious)

Question 4

What is something new that I learned about volumes of revolution?

Answer 4

If the shape is symmetrical around the axis then you need to only do half of the volumes of revolution