Q.
Statement - I : The system of equations x+y+z=6,x−y+z=2,2x−y+3z=9 has unique solution statement -II : The system of equations x+y+z=1,2x+y+z=2,x+2y+2z=1 has no solution
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
only I is are true
b
only II is true
c
Both I, II are true
d
Neither I nor II are true
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
Statement : I[AB]=11161−1122−139R2−R1R3−2R1~11160−20−40−31−3~11160−20−400262R3−3R2⇒ unique solutionsStatement : II Since, [AB]=111121121221 R2→R2−2R1R3→R3−R1 ~ 11110−1−100110R3→R3+R2 ~ 11110−1−100000Rank AB= Rank A<3, Infinitely solutions
Watch 3-min video & get full concept clarity