y=(1*3)^│x+1+│x-2││

设全集U={(x,y)│x,y∈R},集合M={(x,y)│y-3/x-2=1},N={(x,y)│y≠x+1},求Cu 已知(3X-2Y+1)的平方+│4X-3Y-3│=0,求X,Y (2x-y+7)²+│4x+3y-1│=0 求x的y次方 设全集U={(x,y)│x∈R,y∈R},集合A=={(x,y)│y-3/x-2=1｝,B=｛(x,y)|y≠x+1｝, 知│x-3y=6│与（x+2y+1）*(x+2y+1)互为相反数,则x= ,y= 已知有理数x,y满足1/2│x-2y│=-2│x-4│,求4x∧2-3y 已知│x+2│=10,│y-1│=6且│x-y│=y-x,求x-y的值 设A={(x,y)│y^2-x-1=0},B={(x,y)│4x^2+2x-2y+5=0},C={(x,y)│ y=kx 已知有理数X,Y满足1/2│X-Y│+┃Y-1/2┃=0,求3X-7Y的值. 2道高数解微分方程题 1.{xy'+(1-x)y=e^2xy│x=ln2 =02.y"-3y'+2y=xe^3x 如果│x-2y+1│+│x+7-5│=0,那么x=,y= y=(1*3)^│x+1+│x-2││