matrix multiplication with integral

I am trying to multiply and integrate three functions a is 1x5 c is 5x18 b is 18x1

I keep puting it in matlab as a.*int(c*b,x,0,1)

it keeps saying Error using .* Matrix dimensions must agree.

[me]

by the way i did but in a . when multiplying c and b

Answer 1

[Walter Roberson]

a*int(c*b,x,0,1)

This assumes that one of b or c is a symbolic array that includes the symbol x.