“《超越学科的认知基础》2015张世超学习报告第六周”版本间的差异
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(→Mathematica 指令表) |
(→Mathematica 指令表) |
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第38行: | 第38行: | ||
|Transpose | |Transpose | ||
|Transpose[A]//MatrixForm | |Transpose[A]//MatrixForm | ||
− | | | + | |- |
|Extract | |Extract | ||
|A[[1]]//MatrixForm | |A[[1]]//MatrixForm | ||
− | | | + | |- |
|Make a 10×10 matrix and automatically populate if with a formula. | |Make a 10×10 matrix and automatically populate if with a formula. | ||
|M=Table[i*j+sin[i+j},{i,1,10},{j,1,10}];M//MatrixForm | |M=Table[i*j+sin[i+j},{i,1,10},{j,1,10}];M//MatrixForm | ||
− | | | + | |- |
|data={1,2,3,4,5} | |data={1,2,3,4,5} | ||
|av2[v_]:=Total[v]/Length[v];av2[data] | |av2[v_]:=Total[v]/Length[v];av2[data] | ||
− | | | + | |- |
|cospan="8"|Function | |cospan="8"|Function | ||
|Define a function | |Define a function |
2015年10月27日 (二) 01:56的版本
关键词
Mathematica[1]
学习报告
Mathematica 指令表
Mathematica 指令表 | |||||||
---|---|---|---|---|---|---|---|
操作 | 指令 | ||||||
enter i | type esc-ii-esc | ||||||
enter square root | control -2 | ||||||
enter "e" | esc-ee-esc | ||||||
Mutiply the matrix A by the Vector v. | A.v %//MatrixForm | ||||||
Determinant | Det[A] | ||||||
Inverse | Inverse[A]//MatrixForm | ||||||
MatrixPower | [A,2]//MatrixForm or A²//MatrixForm | ||||||
Transpose | Transpose[A]//MatrixForm | ||||||
Extract | A1//MatrixForm | ||||||
Make a 10×10 matrix and automatically populate if with a formula. | M=Table[i*j+sin[i+j},{i,1,10},{j,1,10}];M//MatrixForm | ||||||
data={1,2,3,4,5} | av2[v_]:=Total[v]/Length[v];av2[data] | ||||||
Function | Define a function |