Question: How to collect the coefficient of epsilon^(1/2) from A.

test.mw

How to collect the coefficient of epsilon^(1/2) from A.

Actually, I want to write A as A=c1*epsilon^(1/2) +c2*epsilon+c3*epsilon^(3/2)

How to do that? My collect command failed to do this. 

A:=-epsilon^(3/2)*a2^3/4 - (5*epsilon^(3/2)*a4^3)/3 - (5*epsilon^(3/2)*a5^3)/3 + a3*sqrt(epsilon) - sqrt(epsilon)*a2/3 - (2*sqrt(epsilon)*a4)/3 - (2*sqrt(epsilon)*a5)/3 - (5*epsilon^(3/2)*a2)/36 + (5*epsilon^(3/2)*a4)/9 + (5*epsilon^(3/2)*a5)/9 + epsilon/12 + (4*epsilon^(3/2)*a2*a4*a5)/3 - (7*epsilon^(3/2)*a2*a3*a4)/12 - (7*epsilon^(3/2)*a2*a3*a5)/12 + 5*epsilon^(3/2)*a3*a4*a5 - (3*epsilon^(3/2)*a2^2*a4)/4 - (3*epsilon^(3/2)*a2^2*a5)/4 + (2*epsilon^(3/2)*a2*a4^2)/3 + (2*epsilon^(3/2)*a2*a5^2)/3 - 5*epsilon^(3/2)*a4^2*a5 - 5*epsilon^(3/2)*a4*a5^2 + epsilon^(3/2)*a2^2*a3/12 + (5*epsilon^(3/2)*a3*a4^2)/2 + (5*epsilon^(3/2)*a3*a5^2)/2