I do some revisions to my equation but I still got no answer. It says that there is no enough input argument. Can someone please help me?

Question

John Marvin Miniano 2022-5-11

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1716280-i-do-some-revisions-to-my-equation-but-i-still-got-no-answer-it-says-that-there-is-no-enough-input

评论： Alex Sha 2022-5-11

采纳的回答： VBBV

function f=rle(x)

f(1)=x(2)+x(3)+x(5)+x(7)-2758.6474;

f(2)=2*x(1) + 2*x(4) + 4*x(5)-5684.5402;

f(3)=x(2) +2*x(3)+x(4)-4292.1525;

f(4)=2*x(6)-6422.3564;

f(5)=((x(1)^3)*(x(2))/(x(4)*x(5)))-(1893.12055);

f(6)=(x(1)*x(3))/(x(2)*x(4))-(0.7631343);

f(7)=((x(1)*x(2))/x(4))-(32.200985);

>> x0=[150;150;150;150;150;150;150];

x=fsolve(rle,x0);

Not enough input arguments.

Error in rle (line 2)

f(x)=x(2)+x(3)+x(5)+x(7)-2758.6474;

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Answer 1

VBBV 2022-5-11

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1716280-i-do-some-revisions-to-my-equation-but-i-still-got-no-answer-it-says-that-there-is-no-enough-input#answer_961515

编辑：VBBV 2022-5-11

在 MATLAB Online 中打开

x0=[150;150;150;150;150;150;150];

% x = 1:7; % give input vector to fucntion

sol=fsolve(@rle,x0) % call the function using function handle

Equation solved. fsolve completed because the vector of function values is near zero as measured by the value of the function tolerance, and the problem appears regular as measured by the gradient.

sol = 7×1

1.0e+03 * 0.1914 0.2365 1.3252 1.4052 0.6228 3.2112 0.5741

plot(sol)