MATLAB: Reason for line not plotting

2-d line plotplotting

x = 1:10:100;
y = (((20*x+35000)/(70))-1)/x; 
plot(x,y)

I was wondering why the above code does not plot the function, y? As soon as the x is put in the denominator the function refuses to plot.

Best Answer

Use element wise operation because as you defined x as a vector you should use dot it means each element is calculated one by one.

x = 1:10:100;
y = (((20*x+35000)/(70))-1)./x; 
plot(x,y)

Related Solutions

MATLAB: Having trouble plotting

Perhaps you need to use ./ and .^ instead of / and ^.

Try this:

% Variables
Cd = 0;
Cd0 = 0.018;
W = 670; %kN
AR = 6.5;
A = 150; %m^2
p = 0.413; %kg/m^3
Cl = 0;
Fd = 0;
v = 100;
% Formulas
% Cl = (2 * W) / (p * v ^ 2 * A);
% Cd = Cd0 + (Cl ^ 2 / (pi * AR));
% Fd = W * (Cd / Cl);
v = linspace(100, 1000);
Cl = (2 * W) ./ (p * v .^ 2 * A); 
hold on;
Cd = Cd0 + (Cl .^ 2 / (pi * AR));
Fd = W * (Cd ./ Cl);
Fd2 = Fd ./ v;
plot(v, Fd2);

MATLAB: 2D plot of x*sin(1/x)

x = [-1/pi:0.01:1/pi];
y = x.*(sin(1./x));   %<------ element by element operation 
plot(x,y)
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Best Answer

Related Solutions

MATLAB: Having trouble plotting

MATLAB: 2D plot of x*sin(1/x)

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