JEE Mains 28-July-2022 Shift 2 Solved Paper

Section: Mathematics

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Question : 17 of 90

Marks: +1, -0

Let S be the set of all a∈R for which the angle between the vectors

→

u

=a(logeb)

^

i

−6

^

j

+3

^

k

and

→

v

=(logeb)

^

i

+2

^

j

+2a(logeb)

^

k

,(b>1) is acute. Then S is equal to :

[28-Jul-2022-Shift-2]

(−∞,−‌
4
3
)
Φ
(−‌
4
3
,0)
(‌
12
7
,∞)

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