Question

Graph the function y = cos x^2 - sin x^2 on your graphing calculator. Find an equation of the form y = k + AsinBx or y = k + AcosBx that has the same graph. You will find that k, A and B can be chosen from -2,-1,0,1,2. Determine the values of k, A and B. Their sum is....?

Answer 1

that equals sin2x

Answer 2

I have to find an equation that equals that graph using numbers. So if you graph that function, it gives you a nice cosine curve. But then I need to put it in the form y = k + A sin Bx or y= k + Acps Bx . I cant figure out how to write that graph in that form