已知a^2+4a+1=0,(a^4+ma+1)/(3a^3+ma^2+3a)=5, 则 m= ?
问题描述:
已知a^2+4a+1=0,(a^4+ma+1)/(3a^3+ma^2+3a)=5, 则 m= ?
答
几天了,没人回答,太不给面子了,用Matlab给个答案算了.>> [a,m]=solve('a^2+4*a+1=0','(a^4+m*a+1)/(3*a^3+m*a^2+3*a)=5','a,m') a =[ -2+3^(1/2)][ -2-3^(1/2)]m =[ 259/23-37/23*3^(1/2)][ 259/23+37/23*3^(1/2)]...