matlab对已知函数插值问题
来源:百度知道 编辑:UC知道 时间:2024/05/04 04:58:24
设z=x^2+y^2 ,对z函数在(0,1)×(0,2)区域内(0.5,0.4),(0.6,0.4),(0.5,0.5)和(0.6,0.5)点处进行插值。
[x, y] = meshgrid(0:0.01:1, 0:0.01:2);
Z = x.^2 + y.^2;
Zinter = interp2(x, y, Z, [0.5, 0.6, 0.5, 0.6], [0.4, 0.4, 0.5, 0.5])
函数都已知了,还用差值吗,直接计算不可以吗,
x =
0.5000 0.6000 0.5000 0.6000
y =
0.4000 0.4000 0.5000 0.5000
>> Z = x.^2 + y.^2
Z =
0.4100 0.5200 0.5000 0.6100