Question

Look at attached question!!

Answer 1

one easy way is to plug in points in the choices and check which satisfies,
like if we plug in x= 0, which choices will give us y= 2 ??

Answer 2

B.
Since, the periodicity halved,
and the minimum value is 2.

Answer 3

it rides along the humpbacks of a cos, so its a sec ... and its lined up with y=|2| so a and c are out

Answer 4

I agree that it is moving twice as fast thru 2pi ....

Answer 5

Why can't it be C?

Answer 6

becasue its symmetric about the x axis

Answer 7

if we +2, we would move it up or down making it heavy to one side of the other

Answer 8

ok thank you so it will be B?

Answer 9

of course