MATLAB for循環與變參數

Question

策劃我想T從0變化到2000與100間隔{共20個圖形都在同}

給一個繪製該

f(x)=3*(1-x)+7*x+8.314*T((1-x)*(lnx)+x*(lnx))+20*x(1-x) 

涉及循環和繪圖功能的非常基本的代碼。 PS：我在MATLAB

Answer 1

f=@(x,T) 3*(1-x)+7*x+8.314*T*((1-x).*log(x)+x.*log(x))+20*x.*(1-x); 
T=0:100:2000; 
x=linspace(0,10,100); 
for i=1:length(T) 
    plot(x,f(x,T(i))); 
    hold on; 
end 

Answer 2

歡迎Matlab的一個beginer。 :)下面是我們如何做到這一點沒有循環：

% Define your function in terms of x and T 
% Note that we use .* instead of * - this does a pairwise multiply 
% instead of a matrix or vector multiply 
f = @(x,T) 3*(1-x)+7*x+8.314*T.*((1-x).*log(x)+x.*log(x))+20*x.*(1-x); 

% Set your domain 
x = linspace(0, 10, 101); 
T = (0:100:2000); 

% Compute your function for all values of x and T 
tmp = bsxfun(f, x, T'); 

% Plot your output, all at the same time 
plot(x, tmp)