Q.
The equation 1+logx27log3x+1=0 has
see full answer
Start JEE / NEET / Foundation preparation at rupees 99/day !!
21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya
a
no integral solution
b
one irrational solution
c
two real solutions
d
no prime solution
answer is A.
(Unlock A.I Detailed Solution for FREE)
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test
Detailed Solution
1+32log3xlog3x+1=0 Let log3x=y, we get 1+32yy=−1 or 1+32y=1y2 or 2y+32y=1y2 or 2y2+3y−2=0 (∵y≠0) or 2y2+4y−y−2=0 or (y+2)(2y−1)=0y=1/2 or y=−2 (not possible) ⇒ x=31/2
Watch 3-min video & get full concept clarity