Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 2 - Section 2.1 - Functions - Exercises: 1

Answer

${(a)}$ 0 ${(b)}$ 9 ${(c)}$ 9

Work Step by Step

${(a)}$ $${f(-1) = (-1)^{3}+1}$$ $${-1+1}$$ $${=0}$$ ${(b)}$ $${f(2) = (2)^{3}+1}$$ $${8+1}$$ $${=9}$$ ${(c)}$ $${f(2)-f(-1) = ((2)^{3}+1)-((-1)^{3}+1)}$$ $${=(8+1)-(-1+1)}$$ $${=9+0}$$ $${=9}$$
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