F(x)为偶函数,奇次项的系数为0.b=d=0
x=1时,代入切线方程,y=0
F(1)=a+c+e=0
切线方程斜率为-2
F'(1)=4a+2c=-2
F(0)=e=-1
a=-2,c=3
a=-2,b=0,c=3,d=0,e=-1