y=4^x－3.2^x+3,求x∈[1,2]时的值域

y=4^x－3.2^x+3,求x∈[1,2]时的值域 求值域 1,y=(x+2)/(x*x+3x+6) 2,y=3x/(x*x+4) 若(-x+6):(x-y):(4x+y)=3:14:1,求x+y 若(-x+6):(x-y):(4x+y)=3:14:1,求x+y (-x+6):(x-y);(4x+y)=3;14:1,求x+y的值. y=x^2-2x+3,x∈[1,4],求y的值域 已知x-y=1,求[(x+2y)²+(2x+y)(x-4y)-3(x+y)(x-y)]÷y的值 已知x-y=1,求[(x+2y)^2+(2x+y)(x-4y)-3(x+y)(x-y)]除以y的值大神们帮帮忙 设集合A=｛y/y=x²-2x+3,x∈R｝,B=｛y/y=-x²+2x+10,x∈R｝,求A∩B设集合A=｛（x,y)/y=x+1,x∈R｝,B=｛（x,y)/y=-x²+2x+3/4,x∈R｝,求A∩B x/3=y/4,求(x*x-xy)/(x*x+y*y)的值 y=4^x－3.2^x+3,求当x∈[1,2]时的值域 求值域 1.y=-x+x+2,x∈(-1,2] 2.y=8/x-4x+5 3.y=x-2√x求值域1.y=-x+x+2,x∈(-1,2]2.y=8/x-4x+53.y=x-2√x+3 x²-4x-1=0,求(2x-3)²-(x+y)(x-y)-y² 若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值 x(x-3y)=4y(x-3y),求x:y (x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5) 求下列函数最小值Y=X +1/X^2 (X∈R+)Y=X^2 +3/X (X∈R+)Y=3X+ 4/X^2 (X∈R+) 2道数学题,求值域y=x^2-2x-3 ,x∈[0,3)y=-x^2-4x+1,x∈[-1,1]