Error using displayFormula First argument must be string, char, or cell array of character vectors.

Question

ZoZo 2023-12-15

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2061152-error-using-displayformula-first-argument-must-be-string-char-or-cell-array-of-character-vectors

编辑： Walter Roberson 2023-12-15

I get an error while using the displayFormula() command

clc;
syms t;
K = 20;
Per = 1.5;
f1 = 100*((2734*t^5) - (6718*t^4) + (5682*t^3) - (1931*t^2) + (228*t));
f2 = -500;
aCo = (1/Per)*( int(f1, t, 0, ((2*Per)/3)) + int(f2, t, ((2*Per)/3), Per) );
w = ((2*pi)/Per);
Fo = zeros(1, K);
 
%% Fourier
for n=1:1:K
    anCo = (1/Per)*(int(f1*cos(w*n*t),t , 0, ((2*Per)/3)) + int(f2*cos(w*n*t), t, ((2*Per)/3), Per) );
    bnCo = (1/Per)*(int(f1*sin(w*n*t),t , 0, ((2*Per)/3)) + int(f2*sin(w*n*t), t, ((2*Per)/3), Per) );
    Fo = Fo + ((anCo*cos(w*n*t)) + (bnCo*sin(w*n*t)));
end
Fo = Fo + aCo;
displayFormula(Fo)
figure(1)
fplot(Fo,[0 5*Per],'LineWidth',1.5,'Color','#0072BD')
xticks([0 Per 2*Per 3*Per 4*Per 5*Per])
xticklabels({'0', '1T', '2T', '3T', '4T', '5T'})
xlabel('Zaman (t) - [s]')
ylabel('Kuvvet (F) - [N]')
grid on
  