Hi everybody. I need to find zeros of given functions of one (and the same) variable in given interval. f_k(t)=1-cos(a_k*t-b_k), -Pi<t<Pi, k=1,2,...,n (n is a given integer), a_k and b_k are known.
I thought to draw graphics of that functions and find the points of their intersections. But I could just draw graphics, and could not find that points. Could you help me with graphics or advice another way of solution?