The given function is \( y = -2 + 3 \sin \left( x + \frac{\pi}{2} \right) \). This can be compared to the general form of a sinusoidal function:
\[ y = A \sin(Bx + C) + D \]
where \( A \) is the amplitude, \( B \) affects the period, \( C \) is the phase
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