若实数x,y满足8x^2+3y^2-24=0,求2x+4y的取值范围
若实数x,y满足8x^2+3y^2-24=0,求2x+4y的取值范围
已知实数x,y满足x^2+y^2-6x-8y+24=0,则3x+4y-10的取值范围是
已知实数x,y满足x2+y2-4x+1=0,求2x+y的取值范围?
1.已知实数x、y满足x^2+y^2+4x+3=0求(y-2)/(x-1)的取值范围
已知实数X,Y满足X²+Y²+4X+3=0,求Y-2/X-1的取值范围.
已知实数x,y满足{x≧0 y≧x 4x+3y≦12}.z=2y+3/x+1 的取值范围
已知实数x y满足x^2+y^2-6x-8y+21=0,求y/x的取值范围,和x^2+Y^2+2x+4y的最值
若实数x,y满足3x^2+6 y^2=6x分别求x与x^2+y^2的取值范围
若实数x,y满足2x*X+3y*y=1,S=3x*x-2y*y,则S的取值范围为
实数X.Y满足X*X+Y*Y-2X-2Y+1=0,则(Y-4)/(X-2)的取值范围是?
若实数x,y满足x^2+y^2-6x-4y+12=0,则x^2+y^2的取值范围是
已知实数x,y 满足x^2+y^2=1,求(y-2)/(x+1)的取值范围