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Definitions:
Amplitude - Height of Graph
Period - Length of Function till it begins repeating
Phase Shift - Graph is shifted so far left or right
Vertical Shift - Graph is shifted up or down
3 * sin 2(x + pi/2) -2
Amplitude is what the whole equation is multiplied by, in this case 3
Period you take 2pi/ (number before the parenthesis) so the answer is pi
Phase Shift is pi/2 to the left if it were negative it would be pi/2 to the right
Vertical Shift is 2 units down if it were positive it would be 2 units up.
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