31 Replies
@Apu
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.Pls send the soln as well
Q43 as well pls
uk the thing [x+I]=[x]+I where I is integer
Yes
separate the [x+2] like that and suppose [x]=some t and solve the quadratic for solutions
try dis
But there is no integer in the q
the [x+2]=[x]+2
For q46 ?
Oh u thought q48
oh mb
it was yellow
Yea sorry i did it to revise whenever i open the book
i cannot see it is that [x] or mod x in 46
Its [x] they have typoed it to ceil instead of floor
ok then very ez one
uk x=[x] +{x}
Yes
so [x]-x = -{x}
I did that
and {x} is always positive or zero
I cant go any further
so its domain will be null no domain
phi
Oooh
And range ?
Phi right
yeah
It says only s1 is true
then there must be problem cuz you get the phi part right?
Yep but even sarthak soln says s1 is true
I cant understand it tho wait ima send it
The q is printed wrong that thig is ceil function
@myst1cboomer
Oh got it ceil x is 1+floorx so if the no . Is non int then floor x -x + 1 i.e 1-{x}
i was telling you bruv
Yea mb
just try values in such questions in jee mains
try to reduce the time spent on such 1st basis questions
Alr thanka
+solved @myst1cboomer
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