网站开发工具的,家装网站建设多少钱,wordpress网站做h5分类,网站建设 移动端编程示例: 矩阵的多项式计算以javascript语言为例
国防工业出版社的《矩阵理论》一书中第一章第8个习题 试计算2*A^8-3*A^5A^4A^2-4I A[[1,0,2],[0,-1,1],[0,1,0]]
代码如下
html head title 矩阵乘法 /title script srcset.js A^4A^2-4I A[[1,0,2],[0,-1,1],[0,1,0]]
代码如下
html head title 矩阵乘法 /title script srcset.js /script script srclist.js /script meta charsetutf-8 /head body p 计算斐波那契数列输入第N项/p textarea idtxt1 rows4 cols80/textarea p输出结果值/p textarea idtxt2 rows14 cols80/textarea input typebutton οnclicktest() value计算/input
script function test() { //var a[[0.257, 0.504, 0.098],[-0.148, -0.291, 0.439],[0.439, -0.368, -0.071]]; //var b[[16],[128],[128]]; var mat[[1,0,2],[0,-1,1],[0,1,0]]; var identiIdentityMatrix(3);//[[1,0,0],[0,1,0],[0,0,1]];
var coff[-4,0,1,0,1,-3,0,0,2]; var txt1document.getElementById(txt1); var txt2document.getElementById(txt2); //var m[1,0]; mmpoly_matrix(coff,mat,identi);//Matrix_Mul(mat,mat); //mmMatrix_Add(mm,b); txt1.innerTextidenti;//Matrix_Mul_By_Num(mat,3);//poly(coff,10); txt2.innerTextlist(mm,function(a){return a;}); }
/*function poly(coff,x) { var resultcoff[coff.length-1]; for (var icoff.length-2;i0;i--) { resultx*resultcoff[i]; } return result; } */ function Matrix_Mul_By_Num(mat,num) { return Matrix_One_operator(mat,function(a){return a*num;}); } function poly_matrix(coff,x,identi) { var resultMatrix_Mul_By_Num(identi,coff[coff.length-1]); for (var icoff.length-2;i0;i--) { resultMatrix_Add(Matrix_Mul(x,result),Matrix_Mul_By_Num(identi,coff[i])); } return result; } /script /body /html
输出结果值 [[-3,48,-26],[0,95,-61],[0,-61,34]] 这是正确的答案
代码调用了函数库中的如下函数 Matrix_Add 矩阵加法 Matrix_Mul 矩阵乘法 Matrix_Mul_By_Num 矩阵数乘
