#1**+1 **

The first one is a little tricky....b is definitely = 0 ....there is no vertical shift of the second graph from the parent graph of sin x

Also.....the second function * appears* to be the normal sine graph shifted to the left by pi/2 rads...but, in fact, it is shifted to the

For....the second....this graph is symmetric with the y axis.....therefore....it is even ⇒ "F"

CPhill Oct 26, 2017