1 point For the system of differential equations x t x y 2xy 20 y t 8x 2y xy the critical point xo yo with xo 0 yo 0 is xo Change variables in the system by letting x t xo u t y t yo v t The system for u u is u v Use u and u for the two functions rather than u t and u t For the u v system the Jacobian matrix at the origin is A You should note that this matrix in 1 Yo