1.   Cyclical variations in consumption, investment and national income following an increase in autonomous investment - explosive case.

2.   This long-term change was far more striking than short-term cyclical variations brought about by political tensions or fluctuations in the general level of economic activity.

3.   Cyclical variations in consumption, investment and national income following an increase in autonomous investment -- damped case.

4.   Damped cyclical variation in national income.

5.   An explosive cyclical variation in national income results.

6.   Cyclical variations in consumption, investment and national income following an increase in autonomous investment -- explosive case.

7.   Explosive cyclical variation in national income.

8.   Plot the data on a graph and comment on any cyclical variations.

9.   It could instead have been a normal cyclical variation.