The functions f and g are defined for x R by f: x x 1
Question:
The functions f and g are defined for x ∈ R by f: x ↦ x² −1 g: x ↦ 3x + 4
a) Find and simplify expressions for fg(x) and gf(x).
b) Hence find the values of a for which
fg(a) = 4a + gf(a).
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ANSWER a To find fgx we need to substitute gx into fx so we get fgx f...View the full answer
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Related Book For
Complete Pure Mathematics 1 For Cambridge International AS & A Level
ISBN: 9780198427438
2nd Edition
Authors: Jean Linsky, Brian Western, James Nicholson
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