Number of real solutions of the equation x−1x+1−1x=x is
see full answer
Your Exam Success, Personally Taken Care Of
1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.
An Intiative by Sri Chaitanya
a
1
b
2
c
0
d
infinite
answer is A.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
We have x−1x+1−1x=x---1⇒x−1x−1−1xx−1x−1−1x=x⇒ x−1x−1+1xx−1x−1−1x=x⇒ x−1x=x−1x−1−1x----2Adding (1) and (2), we get1−1x+x=2x−1x⇒ x−1x−2x−1x+1=0⇒ x−1x2-21x−1x+12=0 ⇒ x−1x−12=0⇒x−1x=1⇒ x2−x−1=0⇒ x=1±52 As x=1−52 does not satisfy the given equation.