Hello, I have the following maple expression (sorry, it is somewhat lengthy)

e_x0 :=

4*ep^2*sin(m*Pi/b*y)*sin(n*Pi/c*z)*J0*(x1-x0)*(-cos(n*Pi/c*z1)+cos(n*Pi/c*z0))*(-cos(m*Pi/b*y1)+cos(m*Pi/b*

y0))/((2*m^2*Pi^4*c^2*n^2*b^2+n^4*Pi^4*b^4+8*Pi^4*m^4*c^4*Q^2+16*Pi^4*m^4*c^4*Q^4+16*k^4*b^4*c^4*Q^4+8*m^2*

Pi^2*c^4*k^2*b^2*Q^2-32*Pi^2*n^2*b^4*Q^4*k^2*c^2+8*n^2*Pi^2*b^4*k^2*c^2*Q^2+m^4*Pi^4*c^4-32*Pi^2*m^2*c^4*Q^

4*k^2*b^2+16*Pi^4*m^2*c^2*Q^2*n^2*b^2+8*Pi^4*n^4*b^4*Q^2+32*Pi^4*m^2*c^2*Q^4*n^2*b^2+16*Pi^4*n^4*b^4*Q^4)/b

^4/c^4/Q^4)^(1/2)/a/m/Pi^2/n;


and the input parameters are

Can someone please explain the rational behind why this works. b := seq(x^2*Unit('m'), x = 1 .. 5); 1[m],4[m],9[m],16[m],25[m] eval(b, Unit = 1); 1, 4, 9, 16, 25 I use this method but never understood why it works. why does using Unit=1 strip the units? Thanks, DG

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