TMUA 2023 Paper 1 Q15 — Worked Solution

P1·Indices, Logarithms & Exponentials·5.5Official · 2023 · Q15

exponential-rangequadratic-rootssum-of-roots

The difference between the maximum and minimum values of the function

f (x) = a^{c o s x}

, where

a > 0

and

x

is real, is

3

.Find the sum of the possible values of

a

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