ROOTS  Find polynomial roots.
    ROOTS(C) computes the roots of the polynomial whose coefficients
    are the elements of the vector C. If C has N+1 components,
    the polynomial is C(1)*X^N + ... + C(N)*X + C(N+1).
 
    Note:  Leading zeros in C are discarded first.  Then, leading relative
    zeros are removed as well.  That is, if division by the leading
    coefficient results in overflow, all coefficients up to the first
    coefficient where overflow ocurred are also discarded.  This process is
    repeated until the leading coefficient is not a relative zero.

solve函数求解等式 具体看matlab-help帮助  a+b/(1+x)+c/(1+x)2+d/(1+x)3+e/(1+x)4-p=0

我刚使用matlab，实在不懂，我用solve(方程）求出了x 的表达式，但是如何算出每个x具体是多少呀？