问题
填空题
若a=
|
答案
∵a=
,3 a
∴a3=a,
即a(a 2-1)=0,
解得:a=0或a 2-1=0,
当a=0,则(a+1)(a-1)=-1,
当a 2-1=0,则(a+1)(a-1)=a 2-1=0.
故答案为:-1或0.
若a=
|
∵a=
,3 a
∴a3=a,
即a(a 2-1)=0,
解得:a=0或a 2-1=0,
当a=0,则(a+1)(a-1)=-1,
当a 2-1=0,则(a+1)(a-1)=a 2-1=0.
故答案为:-1或0.