Question

What function is shown on the graph ??

f x = -1/2 cos x
f x = 1/2 sin x
f x =1/2 cos x
f x = -1/2 sin x

Answer 1

The function shown is f(x)= -1/2 cos(x).

sin(x) makes the line way more “curverier” So both sin(x) functions are out. It is NOT 1/2 cos(x) because it would make the y-intercept 0, not .5 In the picture it’s starting at .5 so it’s f(x)=-1/2 cos(x)