integration in matlab - error

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Rasmus
Rasmus 2014-3-4
编辑： Mischa Kim 2014-3-5
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?

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采纳的回答

Mischa Kim
Mischa Kim 2014-3-5
编辑：Mischa Kim 2014-3-5
Rasmus, use
fun = @(x) 3*(sin(x).^4)./x.^4;
sin^4 x is just another way of writing (sin(x))^4.

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