作业帮matlab Index exceeds matrix dimensions.子函数：function [MminT] =MminT(M,H,r,i)syms x;y=(x-i(M)).*(x-i(M+1))./((i(M-1)-i(M)).*(i(M-1)-i(M+1))).*r(M-1,H)+(x-i(M-1)).*(x-i(M+1))./((i(M)-i(M-1)).*(i(M)-i(M+1))).*r(M,H)+(x-i(M-1)).*(x-i(M))./((i(M+1)
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![matlab Index exceeds matrix dimensions.子函数：function [MminT] =MminT(M,H,r,i)syms x;y=(x-i(M)).*(x-i(M+1))./((i(M-1)-i(M)).*(i(M-1)-i(M+1))).*r(M-1,H)+(x-i(M-1)).*(x-i(M+1))./((i(M)-i(M-1)).*(i(M)-i(M+1))).*r(M,H)+(x-i(M-1)).*(x-i(M))./((i(M+1)](/uploads/image/z/9119925-45-5.jpg?t=matlab+Index+exceeds+matrix+dimensions.%E5%AD%90%E5%87%BD%E6%95%B0%EF%BC%9Afunction+%5BMminT%5D+%3DMminT%28M%2CH%2Cr%2Ci%29syms+x%3By%3D%28x-i%28M%29%29.%2A%28x-i%28M%2B1%29%29.%2F%28%28i%28M-1%29-i%28M%29%29.%2A%28i%28M-1%29-i%28M%2B1%29%29%29.%2Ar%28M-1%2CH%29%2B%28x-i%28M-1%29%29.%2A%28x-i%28M%2B1%29%29.%2F%28%28i%28M%29-i%28M-1%29%29.%2A%28i%28M%29-i%28M%2B1%29%29%29.%2Ar%28M%2CH%29%2B%28x-i%28M-1%29%29.%2A%28x-i%28M%29%29.%2F%28%28i%28M%2B1%29)
matlab Index exceeds matrix dimensions.子函数：function [MminT] =MminT(M,H,r,i)syms x;y=(x-i(M)).*(x-i(M+1))./((i(M-1)-i(M)).*(i(M-1)-i(M+1))).*r(M-1,H)+(x-i(M-1)).*(x-i(M+1))./((i(M)-i(M-1)).*(i(M)-i(M+1))).*r(M,H)+(x-i(M-1)).*(x-i(M))./((i(M+1)
matlab Index exceeds matrix dimensions.
子函数：
function [MminT] =MminT(M,H,r,i)
syms x;
y=(x-i(M)).*(x-i(M+1))./((i(M-1)-i(M)).*(i(M-1)-i(M+1))).*r(M-1,H)+(x-i(M-1)).*(x-i(M+1))./((i(M)-i(M-1)).*(i(M)-i(M+1))).*r(M,H)+(x-i(M-1)).*(x-i(M))./((i(M+1)-i(M-1)).*(i(M+1)-i(M))).*r(M+1,H);
c=sym2poly(y);
MminT=roots(c);
程序：
M=2;
H=3;
r=[1 2 3 4 5;2 3 4 5 6;3 4 5 6 7;4 5 6 7 8];
i=[1 2 3 4 5];
[MminT] =MminT(M,H,r,i);
a=MminT;
错误：
Index exceeds matrix dimensions.
Error in ==> aaa at 5
[MminT] =MminT(M,H,r,i);
还是不太懂,应该怎么改呢?我期望的道的MminT是一个数.
matlab Index exceeds matrix dimensions.子函数：function [MminT] =MminT(M,H,r,i)syms x;y=(x-i(M)).*(x-i(M+1))./((i(M-1)-i(M)).*(i(M-1)-i(M+1))).*r(M-1,H)+(x-i(M-1)).*(x-i(M+1))./((i(M)-i(M-1)).*(i(M)-i(M+1))).*r(M,H)+(x-i(M-1)).*(x-i(M))./((i(M+1)
MminT
看一下这个变量的维数,提示是告诉你这个变量没有你要得到的维数.