已知x、y是实数,且满足y=x−6+6−x+1
已知实数xy满足x/y=x-y,且y>1,则实数x的取值范围是
已知x,y是实数,且满足4x²-4x+根号y-6=-1,求x-y的值
已知x,y是实数且满足sinx*cosy=1,则cos(x+y)=
已知x,y为实数,且满足1+x
已知实数x、y满足x−1
实数x,y满足tanx=x,tany=y,且|x|≠|y|,则sin(x+y)x+y−sin(x−y)x−y
已知实数x,y满足方程x+2y=6,当1≤x≤3时,求y−1x−2
已知非负实数x,y满足2x+3y-6≤0 且3x+2y-6≤0,则x+y的最大值是?
已知实数x,y满足x−x+1=y+3−y
已知x,y是实数,且满足(x^2+y^2)(x^2+y^2+1)=12.求x^2+y^2的值
已知实数x,y,满足xy=1,且x>2y>0,则(x^2+4y^2)/(x-2y)的最小值是?
已知实数x、y满足x²+y²+4x-6y+13=0