Tardigrade
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Tardigrade
Question
Mathematics
Consider, f ( x )=(λ4-2 λ2) x +3 cos x , λ ∈ R. The least positive integral value of λ for which f(x) is monotonically increasing for all x ∈ R.
Q. Consider,
f
(
x
)
=
(
λ
4
−
2
λ
2
)
x
+
3
cos
x
,
λ
∈
R
.
The least positive integral value of
λ
for which
f
(
x
)
is monotonically increasing for all
x
∈
R
.
2256
114
Application of Derivatives
Report Error
A
2
B
3
C
4
D
5
Solution:
Correct answer is (a) 2