1^x + 1^-x = 2 What is the value of x?	Choose the correct choice from the following answers:	A) -1	B) -1/2	C) 0	D) 1/2	E) 1
let 1^x = t   t+1/t =2   t^2 -2t +1 =0   (t-1)^2=0   t-1=0   t=1   1^x=1   x=1   Ans: 1
<result>E</result>
1^x + 1^-x = 2 What is the value of x?