x=0,1,2时y=1,0.5,0.2.求分段线性插值函数
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/31 14:15:32
x=0,1,2时y=1,0.5,0.2.求分段线性插值函数
x=0,1,2时y=1,0.5,0.2.求分段线性插值函数
x=0,1,2时y=1,0.5,0.2.求分段线性插值函数
由已知可设该二次函数为:Y=aX^2+bX+c.
1.当X=0时,Y=-1可得:c=-1.
2.当X=-2时,Y=-1可得:4a-2b-1=0.(1)
当X=0.5时,Y=-1可得:a+2b-4=0.(2)
联立(1)、(2)方程解得:a=1,b=3/2.
所以该二次函数为:Y=X^2+(3/2)X-1.
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?
已知|3x+y-0.5|+(x+2y+1.5)^2=0,求代数式(x-y)(x-2y)-3x(1/3x-y)+(2x+y)(2x-y) 快.
0.2X^2Y-0.5XY^2-0.3X^2Y+0.7X^2Y,当x=-1,y=2/3时,最后=?
(x+y)+(2x+0.5y)+(3x+1/6y)+...+(9x+1/72y),当x=2,y=9时,求代数式的值
(x-y)(x+xy+y)+xy(y-x) 其中x=7.1 y=2.92x+y=0,2x-y=0.5,求2x^2-1/2y^2
已知x,y满足约束条件:x-y+1>=0,x+y-2>=0,x
当x=-1 y=-2时求代数式[2x^2-(x+y)(x-y)][(-x-y)(-x+y)+2y^2]的值
当x=2 y=2分之1 时,代数式(x+y)(x-y)+(x-y)^-(x^-3xy )
若|x+y-1|+(x-y-2)²=0,求代数式(x+2y)(x-2y)-(2x-y)(-y-2x)的值.
当x+y/x-y=1/2时,求代数式x-y/x+y-2x+2y/x-y的值
当x-y/x+y= -1/2时,求y-x/x+y -2x+2y/x-y的值.(要有过程)
{4x-3y-10=0 3x-2y=0,{3x-4(x-y)=2 2x-3y=1,{2(x+y)-(x-y)=3 (x+y)-2(x-y)=1
已知2x-y=0,求分式【1+(3*y*y*y/x*x*x-y*y*y)】/【1+(2y/x-y)】的值注:x*x*x-y*y*y=(x-y)*(x*x+xy+y*y)
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)
(x-y)(x+y)-(x+y)^2+2y(y-x),其中x=1,y=3.
解方程组:①4x+3y-5=0,x-2y-4=0.②5x-2=2(y-1),2(x-2)+(y-1)③0.2x+0.5y=0.2,0.4x+0.1y=0.4④3x-13y=-12,x+3y=2