How to plot? Having a issue.. Need to plot evolution of the norm of a symbolic matrix for t=0 to 1.

syms t
PHI=[ 1, t, t/3 - (2*exp(-3*t))/9 + 2/9, (2*t)/3 + (2*exp(-3*t))/9 - 2/9;
    0, 1, (5*exp(-3*t))/12 - (3*exp(t))/4 + 1/3, 2/3 - exp(t)/4 - (5*exp(-3*t))/12;
    0, 0, exp(-3*t)/4 + (3*exp(t))/4, exp(t)/4 - exp(-3*t)/4;
    0, 0, (3*exp(t))/4 - (3*exp(-3*t))/4, (3*exp(-3*t))/4 + exp(t)/4];
N=norm(PHI);
ezplot(N,[0,1])
Still showing error: 
Dimension argument is not supported when two input
arrays are provided.
Error in inline/feval (line 33)
        INLINE_OUT_ = inlineeval(INLINE_INPUTS_,
        INLINE_OBJ_.inputExpr, INLINE_OBJ_.expr);
Error in ezplotfeval (line 51)
    z = feval(f,x(1));
Error in ezplot>ezplot1 (line 486)
    [y, f, loopflag] = ezplotfeval(f, x);
Error in ezplot (line 158)
                [hp, cax] = ezplot1(cax, f{1}, vars,
                labels, args{:});
Error in sym/ezplot (line 78)
      h = ezplot(fhandle(f),varargin{:});%#ok<EZPLT>
Error in Q2 (line 10)
ezplot(N,[0,1]);

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Answer 3

Stijn Haenen 2019-12-7

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/495419-how-to-plot-having-a-issue-need-to-plot-evolution-of-the-norm-of-a-symbolic-matrix-for-t-0-to-1#answer_405322

在 MATLAB Online 中打开

Your PHI is a 4x4 matrix, do you want to plot 16 function against t?

That can be done with:

syms t 
PHI=[ 1, t, t/3 - (2*exp(-3*t))/9 + 2/9, (2*t)/3 + (2*exp(-3*t))/9 - 2/9 ; 
0, 1, (5*exp(-3*t))/12 - (3*exp(t))/4 + 1/3, 2/3 - exp(t)/4 - (5*exp(-3*t))/12 ; 
0, 0, exp(-3*t)/4 + (3*exp(t))/4, exp(t)/4 - exp(-3*t)/4 ; 
0, 0, (3*exp(t))/4 - (3*exp(-3*t))/4, (3*exp(-3*t))/4 + exp(t)/4 ]; 
fplot(PHI,t)

I dont know what you want with the norm function, this norm does not work.