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Methods2024 NHT Exam 2 Section A · Q7CAS active1 mark

Minimum value of a transformed cosine function

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The function $f : \R \to \R, f(x) = a\cos\left((b-1)x\right) + b$ has a period of $\frac{\pi}{3}$ and a maximum value of $10$ .

Given that $6$ , the minimum value of the function $f$ is

1 mark

A

6

B

4

C

1

D

-4

E

-10

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