integration in matlab - error

I have to integrate the following expression

(3*sin^4 x)/x^4 with 0 as lower limit and 3 as upper limit.

my code is the following:

fun=@(x) (3*(sin.^4)(x))/x^4

q6=integral(fun,0,2)

what do i do wrong, it keeps saying ---> Unbalanced or unexpected parenthesis or bracket.

I can't see the problem - Anyone?

Answer 1

[Mischa Kim]

Rasmus, use

 fun = @(x) 3*(sin(x).^4)./x.^4;

sin^4 x is just another way of writing (sin(x))^4.