How do i make this form with matrix ?

Question

Ann Lee 2022-4-1

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1686469-how-do-i-make-this-form-with-matrix

评论： Voss 2022-4-1

采纳的回答： Voss

在 MATLAB Online 中打开

i want to make form like this picture with code.

(first a in forloop is series a, second a in forloop is series b, third a is seriesc)

and i got syntax error.

error

>> A=work5(0.5)

error: parse error near line 21 of file C:\Users\workspace\work5.m

syntax error

>>> fprintf('y-sum series a) series b) series c); %d %d %d',y,A]

^

could you check my code?

function A=work5(x)
m=1;
for k=10:10:160
  n=1:k;
  a= sum(nthroot(n.^2,5)./((3.^n).*(n+1)));
  A(1,m)=a;
  
  a= sum((3*n.^2+n)/(2*n.^4+nthroot(n,2)));
  A(2,m)=a;
  
  a= sum((nthroot(37,2)*n.^3)/((2*n.^3)+(3*n.^2)));
  A(3,m)=a;
  
  m=m+1;
  
end
y=[10:10:160]
fprintf('y-sum   series a)   series b)   series c); %d   %d   %d',y,A]

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Answer 1

Voss 2022-4-1

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1686469-how-do-i-make-this-form-with-matrix#answer_932344

在 MATLAB Online 中打开

A = work5(0.5);
y-sum		series a) 	series b) 	series c) 
10-sum		0.23609170	0.01834773	2.60371306
20-sum		0.23609351	0.00469013	2.80141626
30-sum		0.23609351	0.00210244	2.87601971
40-sum		0.23609351	0.00118798	2.91522735
50-sum		0.23609351	0.00076243	2.93940338
60-sum		0.23609351	0.00053046	2.95580253
70-sum		0.23609351	0.00039026	2.96765763
80-sum		0.23609351	0.00029910	2.97662765
90-sum		0.23609351	0.00023652	2.98365156
100-sum		0.23609351	0.00019171	2.98930074
110-sum		0.23609351	0.00015852	2.99394282
120-sum		0.23609351	0.00013326	2.99782508
130-sum		0.23609351	0.00011359	3.00111997
140-sum		0.23609351	0.00009797	3.00395140
150-sum		0.23609351	0.00008537	3.00641075
160-sum		0.23609351	0.00007505	3.00856683
function A=work5(x)
m=1;
y = 10:10:160;
for k = y
  
  n=1:k;
  a= sum(nthroot(n.^2,5)./((3.^n).*(n+1)));
  A(1,m)=a;
  
  a= sum((3*n.^2+n)/(2*n.^4+nthroot(n,2)));
  A(2,m)=a;
  
  a= sum((nthroot(37,2)*n.^3)/((2*n.^3)+(3*n.^2)));
  A(3,m)=a;
  
  m=m+1;
  
end
fprintf('y-sum\t\t%-10s\t%-10s\t%-10s\n','series a)','series b)','series c)');
fprintf('%-d-sum\t\t%10.8f\t%10.8f\t%10.8f\n',[y; A]);
end

2 个评论
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Ann Lee 2022-4-1

Thank you thank you!!!!

Voss 2022-4-1

You're welcome!

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Answer 2

KSSV 2022-4-1

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1686469-how-do-i-make-this-form-with-matrix#answer_932329

在 MATLAB Online 中打开

A = work5() ; 
function A=work5()
m=1;
for k=10:10:160
    n=1:k;
    a= sum(nthroot(n.^2,5)./((3.^n).*(n+1)));
    A(1,m)=a;
    
    a= sum((3*n.^2+n)/(2*n.^4+nthroot(n,2)));
    A(2,m)=a;
    
    a= sum((nthroot(37,2)*n.^3)/((2*n.^3)+(3*n.^2)));
    A(3,m)=a;
    
    m=m+1;
    
end
y=10:10:160 ; 
fprintf('y-sum   series a)   series b)   series c); %d   %d   %d',y,A)
end