Invalid use of operator.

I'm try to perfom the simple equation:

i.e. the square root of the integral of the square of the signal (averaged av(t)).

But I keep getting the error message "Invalid use of operator.". Please help, I'm very new to MATLAB

Where av(t) = -8.1284e-05

t_full = 1.2726e+04

av(t) = -8.1284e-05
T = 1.2726e+04

int = sqrt(@(t).* (av(t))^2);
MSDV = quadgk(int,0,t_full);

[Tobenna Uzuegbunam]

Just a correction on the code used...

av(t) = -8.1284e-05
T = 1.2726e+04
int = sqrt(@(t).* (av(t))^2);
MSDV = quadgk(int,0,T);

Answer 1

[Steven Lord]

int = sqrt(@(t).* (av(t))^2);

That is not valid. You're not multiplying the square of av(t) by anything.

int = sqrt(@(t) (av(t))^2);

[Tobenna Uzuegbunam]

Hi Steven,

Thanks for this, but, I now get the error message "check for missing argument or incorrect argument data type in call to function 'sqrt"

[Steven Lord]

My mistake, I only focused on the operator. The square root operator needs to be inside the anonymous function.

int = @(t) sqrt(av(t)^2);

And you probably want to vectorize your function.

int = @(t) sqrt(av(t).^2);

[Tobenna Uzuegbunam]

Thank you!