matlab对数函数代码

Sure! Here is an example of MATLAB code for calculating the natural logarithm (logarithm to the base e) of a number:

% Input
x = 10; % The number for which we want to calculate the natural logarithm

% Calculation
y = log(x);

% Output
disp(['The natural logarithm of ', num2str(x), ' is ', num2str(y)]);

This code sets the value of `x` to 10, calculates the natural logarithm using the `log()` function, and then displays the result using the `disp()` function.

You can change the value of `x` to any other number you want.