function rhs = bvp_shooting_rhs(t,y)
% y'' = -sin(y)
%
% Change variables:
% y1 = y
% y2 = y'
%
% Equation becomes 1st-order system:
%  y1' =  y2
%  y2' = -sin(y1)

rhs = [y(2)
      -sin(y(1))];