I can't really find why matlab won't plot this equation, I run into an error as soon as i try to run it

x = 0 : 0.01 : 10 ;
y= ((exp(-0.5.*x))*(4-x))-2;

Error using *
Incorrect dimensions for matrix multiplication. Check that the number of columns in the first matrix matches the number of rows in the second matrix. To operate on each element of the matrix individually, use TIMES (.*) for elementwise multiplication.

% Now, plot the f(x) -> x:
plot(x, y)
% Set axes labels:
xlabel('x')
ylabel('y')

Answer 1

[Dyuman Joshi]

You need to use times, .* for multiplying arrays (of compatible sizes) element-wise -

As the error states, mtimes, * is reserved for matrix multiplication.

x = 0 : 0.01 : 10 ;
%                 vv
y= ((exp(-0.5.*x)).*(4-x))-2;
% Now, plot the f(x) -> x:
plot(x, y)
% Set axes labels:
xlabel('x')
ylabel('y')