Test:209 QNo:5

Solve:
[x2]-3[x]+2≤0, where [ ] is greatest integer fn.

7 Answers

1
stoicism07 YASHKAR ·

put x=2.5 will not satisfy

1
metal ·

1st of all x cannot be negative as all the terms become +ve.
Morover, x cannot be <1 (obvious, isn't it?)

So, x≥1
Now, The inequality x2-x+2≤0 is satisfied for 1≤x≤2
So, the given inequality will be satisfied for a subset of [1,2]
It is apparent that for x≥√2 the given inequality is not satisfied.

So x ε [1,√2)

1
apoorv1503 ·

The soln given for this question is absolutely wrong.
soln is x ε [1,√2).

hence answer shud b none of these option d.

1
Arshad ~Died~ ·

@apoorv
ya it happens some time.....

1
rohit007 joshi ·

solution of last question is wrong

1
mkagenius ·

give me my 100 percent marks :(((((
:(((((((((((((((((((((((((((((((((((((((((((((((
:((((((((((((((((((((((((((((((((((((((((((

1
sivapoornan ·

the correct solution is [1,√3)

Your Answer

Close [X]