Use the result in Exercise 40(b) to prove each of the

Chapter 2, Problem 41

(choose chapter or problem)

Use the result in Exercise 40(b) to prove each of the following inequalities. Assume that p, q, r, and s all are nonnegative. (a) ( pq r)/2 (b) (pq rs)/2 Exercises 42 and 43 concern the environmental problem known as acid rain. The principal source contributing to acid rain is sulfur dioxide, emitted into the atmosphere through the burning of fossil fuels. Once in the clouds, the sulfur dioxide combines with water vapor to form one of the nasty ingredients of acid rainsulfuric acid.

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