Is it possible to create a legend on a graph which is reliant on the function input?

I am graphing a function, and I want the legend on the graph to post what the input of the function is...

Answer 1

[KSSV]

x = linspace(0,2*pi) ;
f1 = @(x) sin(x) ;
f2 = @(x) x.^2 ;

y1 = f1(x) ;
y2 = f2(x) ;
figure
hold on
plot(x,y1,'r')
plot(x,y2,'b')

legend('sin(x)','x^2')

Answer 2

[Walter Roberson]

Yes but it would not often be readable.

For a function with input in the variable x you can do

   legend( num2str(x))

However the user could just look at the plot to see what the range of the values were?