Question

Find a function of the form y = A; A * sin(kx) + C or y = A * cos(kx) + C whose graph matches this one:I don’t understand how my answer is wrong

Answer 1

Recall that the graph of the cosine function is:

Now, notice that the given graph is the above graph but with a midline

`y=1,`

and amplitude equal to 4. The frequency is also different.

Therefore, the equation of the function given in the graph is:

`y=4cos((\pi)/(5)x)+1.`

Answer:

`y=4cos((\pi x)/(5))+1.`