Integral error in the function

I do not know where to put dots so that the integral works

func=@(t) (t^((3/2)-1)*(exp(-t)));
Gamma=integral(func,0,Inf);

this are the errors

Error using  ^  (line 52)
Incorrect dimensions for raising a matrix to a power. Check that the matrix is square and the power is a scalar. To perform
elementwise matrix powers, use '.^'.

Error in Rsphericalwave>@(t)(t^((3/2)-1)*(exp(-t))) (line 35)
func=@(t) (t^((3/2)-1)*(exp(-t)));

Error in integralCalc/iterateScalarValued (line 314)
                fx = FUN(t);

Error in integralCalc/vadapt (line 132)
            [q,errbnd] = iterateScalarValued(u,tinterval,pathlen);

Error in integralCalc (line 83)
        [q,errbnd] = vadapt(@AToInfInvTransform,interval);

Error in integral (line 87)
Q = integralCalc(fun,a,b,opstruct);

Error in Rsphericalwave (line 36)
Gamma=integral(func,0,Inf);

Answer 1

[KSSV]

func=@(t) (t.^((3/2)-1).*(exp(-t)));  %<-- element by element operations 
Gamma=integral(func,0,Inf)

Gamma = 0.8862

Answer 2

[Torsten]

func = @(t) t.^0.5.*exp(-t);
Gamma = integral(func,0,Inf);