# How can i display a funtion dependenet to x ?

1 view (last 30 days)
Mallouli Marwa on 21 Jan 2017
Commented: Star Strider on 23 Jan 2017
Hi How can i can i display f with values in function of x ?
L=3;
sol(1)=2;
psi=1;
f (x) = @(x) cos ( (sol(1)/L) *x)- cosh( (sol(1)/L) *x)+ psi *( sin( (sol(1)/L) *x)- sinh( (sol(1)/L) *x));

Star Strider on 21 Jan 2017
This works:
L=3;
sol(1)=2;
psi=1;
f = @(x) cos ( (sol(1)/L) *x)- cosh( (sol(1)/L) *x)+ psi *( sin( (sol(1)/L) *x)- sinh( (sol(1)/L) *x));
x = linspace(-10, 10);
figure(1)
plot(x, f(x))
grid
xlabel('x')
ylabel('f(x)')
See the documentation for the linspace function to understand how to change the limits and number of elements in the ‘x’ vector.
Star Strider on 23 Jan 2017
A numeric evaluation of df(x)/dx would be the gradient function.

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