How to clear command window through code in MatLab? -- MatLab

 How to clear command window through code in MatLab? -- MatLab


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diagonal matrix--diag

 diagonal matrix--diag how to create a diagonal matrix? diag() func. how to get  diagonal elements from a matrix? diag() func. [syntax][descr] (1) M=diag(Vector V,int k=0) will return a |V|*|V| diagonal matrix |V| is length of V When k=0, M is  |V|*|V| size, M[i,i]=v[i] , M[i,j]=0 , for 1<=i , j <=|V|  i!=j , where i and j is positive integer.  i.e.  value of  elements in M which its index belongs diagonal is equal to value of elements in Vector V, otherwise is equal to 0. translation:對角線索引的值為V的元素的值，非對角線索引的值為0 When k>0,  M is |V+k|*|V+k| size, M[i+k,i+k]=v[i] ,M[i,j]=0 for 1<=i , j <=|V|  i!=j , where i , j and k is positive integer.  [extra tips] You can think about M=diag(V), then add a row and column at left and button which all element are equal to 0. translation:你可以想M=diag(V)，然後把所有為0的元素加到最左行(第一行)和最下列(最後一列) When k<0,  M is |V+k|*|V+k| size, M[i,i]=v[i] ,M[i,j]=0 for 1<=i , j <=|V|  i!=j , where i and...
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How to look at a keyword through code in MatLab? -- MatLab

 How to look at a keyword through code in MatLab? -- MatLab If you wanna learn about this keyword, you can use help cmd e.g. I wanna know syms cmd. I can write the following line. help syms And I will see the output. syms   Short-cut for constructing symbolic variables.     syms arg1 arg2 ...     is short-hand notation for creating symbolic variables        arg1 = sym('arg1');        arg2 = sym('arg2'); ...     or, if the argument has the form f(x1,x2,...), for     creating symbolic variables        x1 = sym('x1');        x2 = sym('x2');        ...        f = symfun(sym('f(x1,x2,...)'), [x1, x2, ...]);     The outputs are created in the current workspace.       syms  ... ASSUMPTION     additionally puts an assumption on the variables created.     The ASSUMPTION can ...
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