JEE Main 8 Apr 2019 Paper 2 Solved Paper

Section: Mathematics

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Question : 62 of 90

Marks: +1, -0

Let

→

a

=3

^

i

+2

^

j

+x

^

k

and

→

b

=

^

i

−

^

j

+

^

k

, for some real x. Then |

→

a

×

→

b

|=r is possible if :

[8 Apr 2019 Shift 2]

0<r≤√
3
2
√
3
2
<r≤3√
3
2
3√
3
2
<r≤5√
3
2
r≥5√
3
2

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