a^2+1/a^2=a^2-2+1/a^2 +2=(a-1/a)^2+2=3^2+2=11
已知a-1/2a=3,则a^2+1/2a^2
1个回答
相关问题
-
已知a+a/1=3 则 a^2+1+a^4/a^2
-
已知1/log2 a+1/log3 a=2,则a=?
-
已知实数a满足a2+2a-8=0,则[1/a+1−a+3a2−1×a2−2a+1(a+1)(a+3)]=______.
-
已知实数a满足a2+2a-8=0,则[1/a+1−a+3a2−1×a2−2a+1(a+1)(a+3)]=______.
-
已知实数a满足a2+2a-8=0,则[1/a+1−a+3a2−1×a2−2a+1(a+1)(a+3)]=______.
-
已知向量 a=(1,2,3)^t,a2=(3,2,1)^t,a3=(-2,0,-2)^t ,则2a1-3a2+a3=
-
已知(a-3)(a-1)=2,则(a-3)²+(a-1)²=?
-
已知a2-a-1=0,则a3-2a+2011=______.
-
已知a+1a=3,则a2+1a2的值是( )
-
已知集合A={a2,a+1,-3} B={a-3,2a-1,a2+1},若A∩B={-3},则实数a=_________