problem with integration of a function

I have created a user-defined function for yb(x)=10x^2exp(-2x)[sin(3x-pi)+cos(x^2)]

code shown below (saved as b3.m) :

function [yb] = b3(x)
yb = 10*x.^2*exp(-2*x).*(sin(3*x-pi)+cos(x.^2))
end

now trying to find integral of function and my code is:

intb3=integral(@b3,0,5)

this comes up in my command window:

Error using  * 
Incorrect dimensions for matrix multiplication.
Check that the number of columns in the first
matrix matches the number of rows in the second
matrix. To perform elementwise multiplication, use
'.*'.

Error in b3 (line 2)
yb = 10*x.^2*exp(-2*x).*(sin(3*x-pi)+cos(x.^2))

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 75)
        [q,errbnd] =
        vadapt(@AtoBInvTransform,interval);

Error in integral (line 88)
Q = integralCalc(fun,a,b,opstruct);

Error in b4 (line 4)
intb3=integral(@b3,0,5)

[Chloe St John]

is it simply just putting a . before the *?

Answer 1

[madhan ravi]

yb = 10*x.^2.*exp(-2*x).*(sin(3*x-pi)+cos(x.^2))
     %      ^--- missed it