A problem in calculus

*To*: mathgroup at smc.vnet.net*Subject*: [mg72469] A problem in calculus*From*: kaipku at gmail.com*Date*: Sat, 30 Dec 2006 05:35:43 -0500 (EST)

Hi I have a problem to solve. Let x(z)= a4*z^4+a3*z^3+a2*z^2+a1*z+1 be a polynomial in z. I want the formula of the j'th derivative in z of (x(z))^(1/2). I think this kind of problems should have been solved. But I do not know where to find the formula. Could someone please find it for me? Thank you very much!