Q9

MCQ1 mark, −0.33

Consider the function $f(x) = \sin(x)$ in the interval $x =\left[\frac{\pi}{4},\frac{7\pi}{4}\right]$ . The number and location(s) of the local minima of this function are

(A)

One, at $\dfrac{\pi}{2}$

(B)

One, at $\dfrac{3\pi}{2}$

(C)

Two, at $\dfrac{\pi}{2}$ and $\dfrac{3\pi}{2}$

(D)

Two, at $\dfrac{\pi}{4}$ and $\dfrac{3\pi}{2}$

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