Increasing and Decreasing Functions (Jee Mains) | ExamDuo
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Application of Derivates
Medium
Increasing and Decreasing Functions
Let 'a' be a real number such that the function
f
(
x
)
=
a
x
2
+
6
x
−
15
,
x
∈
R
is increasing in
(
−
∞
,
3
4
)
and decreasing in
(
3
4
,
∞
)
. Then the function
g
(
x
)
=
a
x
2
−
6
x
+
15
,
x
∈
R
has a:
Ask about this question
SELECT ONE OPTION
A
local maximum at
x
=
−
3
4
B
local minimum at
x
=
−
3
4
C
local maximum at
x
=
3
4
D
local minimum at
x
=
3
4
Check