The functions f and g are defined, for x R, by f: x 3x -

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The functions f and g are defined, for x ∈ R, by f: x → 3x - k, where k is a positive constant g: x → 5x - 14/x+1, where x ≠ -1.

a. Find expressions for f^-1 and g^-1.

b. Find the value of k for which f^-1(5) = 6.

c. Simplify g^-1(x).

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Cambridge IGCSE And O Level Additional Mathematics Coursebook

ISBN: 9781108411660

2nd Edition

Authors: Sue Pemberton

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Question Posted: Aug 17, 2021 07:09 AM

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The functions f and g are defined, for x R, by f: x 3x -

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fx3x k gx5x14 x1 i F 1 G 1 let fx y let gxy y 3xk y5x14x1 ...View the full answer

Cambridge IGCSE And O Level Additional Mathematics Coursebook

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