Question

1. The data about the type of CDs sold on a particular day at a shop is shown in the table below. Film song Type of CD Rhyme Bhajan Game VCD Number sold 547 28 52 184 106 (a) Which type of CD sold the least? (b) By how much does the highest selling type of CD outsell the second- and third-highest types taken together? (c) What was the total number of CDs sold? ​

Answer 1

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Rolle's theorem states that if a function f is continuous on the closed interval [a, b] and differentiable on the open interval (a, b) such that f(a) = f(b), then f′(x) = 0 for some x with a ≤ x ≤ b.

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