y=x(1-x) (0
来源:学生作业帮助网 编辑:六六作业网 时间:2025/01/22 17:58:28
y=x(1-x)(0y=x(1-x)(0y=x(1-x)(0y=x(1-x)=-(x-1/2)^2+1/4即:函数y=f(x)以x=1/2为对称轴,开口方向向下,最大值为1/4.又0配方y=(b-1/
y=x(1-x) (0
y=x(1-x) (0
y=x(1-x) (0
y=x(1-x)=-(x-1/2)^2+1/4 即:函数y=f(x)以x=1/2为对称轴,开口方向向下,最大值为1/4.又0
配方
y=(b-1/2)2-1/4(键坏 用b代替)
结合图
b=1/2右 图上升
b=100时 y大=9900
y=x(1-x)
=-x^2+x
=-(x-1/2)^2+1/4
x=1/2时y最大,又0
mathematica软件,已知y[x],Y=f1(x),X(x)=f2(x),如何plot Y[X]?y[x_] := x + 9.81/2*x*xk=1X[x] = x - k*y'[x]/(1 + (y'[x])^2)^0.5Y[x] = y[x] + k/(1 + (y'[x])^2)^0.5Plot[{y[x],Y[X],},{x,0,2}]
设x大于1,y大于0,x^y+x^-y=2根号二,x^y-x^-y等于?
y=1-x^2 x>=0 ,y=sin|x|/x x
若实数x,y满足x-y+1》=0,x+y>=0,x
已知x,y满足约束条件:x-y+1>=0,x+y-2>=0,x
若实数x,y满足x-y+1>=0,x+y>=0,x
画出不等式组x+y>0,x=还有不等式(x-y)(x-y-1)=
y=1/x^2(x>0) y=(1-x)/(1+x) y=(e^x-e^-x)/2
若x+y=1,x不等于0则x+(2xy+y^2)/x/(x+y)/x=
y=x(1-x) (0
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
(x+y-5)*(x+y-5)+(x-y+3)=0 x*x-y*y
已知:3x-5y=0,求x/y,x-y/y,x-y/x
已知x^2+y^2-8x+12y+52=0 ,求1/2x-1/x-y(x-y/2x-x^2+y^2)
已知x^2+y^2-8x+12y+52=0 ,求1/2x-1/x-y(x-y/2x-x^2+y^2)
已知x²+y²+6x-8x+25=0,求(x/x²-y² - 1/x+y)÷y/y-x
实数x,y满足{x-y+1>=0;y+1>=0;x+y+1
X>0 Y>0证1/x+1/y>=4/(x+y)X>0 Y>0 证1/x+1/y>=4/(x+y)