Write Tabular Data to Text File Write a short table of the exponential function to a text file called exp.txt.

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Angkhana Noyhiran 2015-7-6

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/228687-write-tabular-data-to-text-file-write-a-short-table-of-the-exponential-function-to-a-text-file-calle

评论： Azzi Abdelmalek 2015-7-7

A = input('Enter A: ');
B = input('Enter B: ');
func = @(x) exp(x)-2*cos(x); 
e = 1;                      
while e>0.0001  
    display(A)
    display(B)
    C  = (A+B)/2
    FC = func(C);
    FB = func(B);
    if(FC*FB>0)
        B = C;
    else
        A = C;
    end
    e = (abs((FB-FC)/FB))*100
    fprintf(fileID,'%6s %12s\r\n','A','B','C','e');
  end

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Azzi Abdelmalek 2015-7-7

Angkhana, please edit your original question.

Azzi Abdelmalek 2015-7-7

Look at edited answer

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回答（1 个）

Azzi Abdelmalek 2015-7-6

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/228687-write-tabular-data-to-text-file-write-a-short-table-of-the-exponential-function-to-a-text-file-calle#answer_185159

编辑：Azzi Abdelmalek 2015-7-7

在 MATLAB Online 中打开

Edit

A = input('Enter A: ');
B = input('Enter B: ');
func = @(x) exp(x)-2*cos(x); 
e = 1;
fileID=fopen('fic.txt','w')
fprintf(fileID,'%s \t %s\t %s\t %s  \r\n','i','m','f(m)','error');
while e>0.0001  
display(A)
display(B)
C  = (A+B)/2
FC = func(C);
FB = func(B);
if(FC*FB>0)
    B = C;
else
    A = C;
end
e = (abs((FB-FC)/FB))*100
fprintf(fileID,'%6f %6f %6f %6f\r\n',[A,B,C,e]);
end
fclose(fileID)