dtdyi=fi(y1,y2,,yN) Convert the following differential equations to the standard format of Eq. 7.1: (a) (b) y+yy+yzz+z2+y=cos(t)=3t2=t dtdyi=fi(y1,y2,,yN) Convert the following differential equations to the standard format of Eq. 7.1: (a) (b) y+yy+yzz+z2+y=cos(t)=3t2=t