The graph depicts a function in the form y c cosx y c si

The graph depicts a function in the form y = c + cos(x), y = c + sin(x), y = cos(x - d), or y = sin(x - d) where d is the least possible positive value. Determine the equation. y = ______________

Solution

Here amplitude is (3-1)/2=2/2=1

and the graph is shifted upwards

Therefore the required equation is y=2+cos x

and the form is y=c+cos x