Let y(t) = (y1(t), y2(t))^T and
A(t) = (a(t) b(t)
c(t) d(t)).
A(t) is a 2x2 matrix with a,b,c,d all polynomials in t. Consider the two dimensional Cauchy problem y'(t) = A(t)y(t), y(0)=y0.
Show that a solution exists for all t>=0.
Give a general condition on the A(t) which ensures...