Answer:
Step-by-step explanation:
They want to use a sin function....
so
sin (x) goes from -1 to 3 so amplitude is 2
2 sin (x)
it is shifted UP from usual 0 midline to midline 1
2 sin (x) + 1
and finally, it is compressed from usual period of 2pi to pi
2pi / pi = 2
2 sin (2x) +1 That's it !
