1
You visited us
1
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard XII
Mathematics
Algebra of Limits
If p x = a ...
Question
If
p
(
x
)
=
a
0
+
a
1
x
+
.
.
.
+
a
n
x
n
and
|
p
(
x
)
|
≤
∣
∣
e
x
−
1
−
1
∣
∣
for all
x
≥
0
,
then
|
a
1
+
2
a
2
+
3
a
3
+
.
.
.
+
n
a
n
|
A
≤
1
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
≥
1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
≥
0
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
≤
0
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is
B
≤
1
We have,
p
′
(
1
)
=
lim
h
→
0
p
(
1
+
h
)
−
p
(
1
)
h
⇒
∣
∣
p
′
(
1
)
∣
∣
=
∣
∣
∣
lim
h
→
0
p
(
1
+
h
)
−
p
(
1
)
h
∣
∣
∣
=
lim
h
→
0
|
p
(
1
+
h
)
−
p
(
1
)
|
|
h
|
≤
lim
h
→
0
|
p
(
1
+
h
)
+
p
(
1
)
|
|
h
|
........(1)
Now,
|
p
(
x
)
|
≤
∣
∣
e
x
−
1
−
1
∣
∣
⇒
|
p
(
1
−
h
)
|
≤
∣
∣
e
h
−
1
∣
∣
and
|
p
(
1
)
|
≤
0
⇒
p
(
1
)
=
0
Hence,
∣
∣
p
′
(
1
)
∣
∣
≤
lim
h
→
0
∣
∣
e
h
−
1
∣
∣
|
h
|
=
1
⇒
∣
∣
p
′
(
1
)
∣
∣
≤
1
⇒
|
a
1
+
2
a
2
+
3
a
3
+
.
.
.
+
n
a
n
|
≤
1
Suggest Corrections
0
Similar questions
Q.
Suppose
p
(
x
)
=
a
0
+
a
1
x
+
⋯
+
a
n
x
n
. If
|
p
(
x
)
|
≤
|
e
x
−
1
−
1
|
for all
x
≥
0
, then the maximum value of
|
a
1
+
2
a
2
+
⋯
+
n
a
n
|
is equal to
Q.
If
(
1
+
x
+
x
2
+
⋅
⋅
+
x
n
)
n
=
a
0
+
a
1
x
+
a
2
x
2
+
⋅
⋅
⋅
+
a
m
p
x
m
p
then
a
1
+
2
a
2
+
3
a
3
+
⋅
⋅
⋅
+
n
p
a
n
p
=_______
Q.
If the equation
a
n
x
n
+
a
n
−
1
x
n
−
1
+
⋯
+
a
1
x
=
0
has a positive root
x
=
α
, then the equation
n
a
n
x
n
−
1
+
(
n
−
1
)
a
n
−
1
x
n
−
2
+
⋯
+
a
1
=
0
has a positive root, which is
Q.
If
(
x
+
1
)
(
x
+
2
)
.
.
.
(
x
+
n
)
=
A
0
+
A
1
x
+
.
.
.
.
A
n
x
n
then,
A
1
+
2
A
2
.
.
.
n
A
n
is equal to:
Q.
Let
n
>
2
be an integer and define a polynomial
p
(
x
)
=
x
n
+
a
n
−
1
x
n
−
1
+
.
.
.
.
.
+
a
1
x
+
a
0
where
a
0
,
a
1
,
.
.
.
.
.
a
n
−
1
are integers. Suppose we know that
n
p
(
x
)
=
(
1
+
x
)
p
′
(
x
)
. If
b
=
p
(
1
)
, then.
View More
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Related Videos
Algebra of Limits
MATHEMATICS
Watch in App
Explore more
Algebra of Limits
Standard XII Mathematics
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
AI Tutor
Textbooks
Question Papers
Install app