Consider the following convergent series. Complete parts a through d below. E 10k e -k2 k=1 a. Find an upper bound for the remainder in terms of n. The upper bound for the remainder is (Type an exact answer.) 5e -n? b. Find how many terms are needed to ensure that the remainder is less than 10. The number of terms needed is 3 (Round up to the nearest whole number.) c. Find lower and upper bounds (L, and U, respectively) on the exact value of the series. Choose the correct answer below.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Question 12
12. Consider the following convergent series. Complete parts a through d below.
https://xlitemprod.pearsoncmg.com/api/v1/print/math
00
2 10k e -k?
k= 1
a. Find an upper bound for the remainder in terms of n.
The upper bound for the remainder is
5e -n?
(Type an exact answer.)
b. Find how many terms are needed to ensure that the remainder is less than 10.
The number of terms needed is
3
(Round up to the nearest whole number.)
c. Find lower and upper bounds (L, and U. respectively) on the exact value of the series. Choose the correct answer below.
n
VA. L = 10k e - k+5 e - (n+ 1) and U, =E 10k e - k? +5 e -n
+5e -n2
+ 5e - (n+ 1)2
and U, =
Σ 10ke
k= 1
k=1
- n?
+5 e
and U, =E 10k e
- k2
Ο Β. L- Σ 10ke
+5e -(n+ 1)2
k= 1
k= 1
- (n+ 1)2
e -n?
e
C. Ln =2 10OK e -k?
k=1
and U, =
> 10k e
-k2
k = 1
d. Find an interval in which the value of the series must lie if you approximate it using ten terms of the series.
Using ten terms of the series, the value lies in the interval shown below. Fill in the blank.
(4.049 + (1.410x 10- 52),4.049 + (1.860 x 10-43))
13. Determine whether the following series converges or diverges.
10:4153
9k
Σ
k=0 yk + 11
Choose the correct answer below.
O A. According to the Divergence Test, the series converges because lim a, #0.
k0o
B. According to the Divergence Test, the series converges because lim a = 0.
k00
C. According to the Divergence Test, the series diverges because lim a, #0.
k00
O D. According to the Divergence Test, the series diverges because lim a =0.
k00
E. The Divergence Test is inconclusive.
3/10/2021, 12:54
7 of 9
Transcribed Image Text:12. Consider the following convergent series. Complete parts a through d below. https://xlitemprod.pearsoncmg.com/api/v1/print/math 00 2 10k e -k? k= 1 a. Find an upper bound for the remainder in terms of n. The upper bound for the remainder is 5e -n? (Type an exact answer.) b. Find how many terms are needed to ensure that the remainder is less than 10. The number of terms needed is 3 (Round up to the nearest whole number.) c. Find lower and upper bounds (L, and U. respectively) on the exact value of the series. Choose the correct answer below. n VA. L = 10k e - k+5 e - (n+ 1) and U, =E 10k e - k? +5 e -n +5e -n2 + 5e - (n+ 1)2 and U, = Σ 10ke k= 1 k=1 - n? +5 e and U, =E 10k e - k2 Ο Β. L- Σ 10ke +5e -(n+ 1)2 k= 1 k= 1 - (n+ 1)2 e -n? e C. Ln =2 10OK e -k? k=1 and U, = > 10k e -k2 k = 1 d. Find an interval in which the value of the series must lie if you approximate it using ten terms of the series. Using ten terms of the series, the value lies in the interval shown below. Fill in the blank. (4.049 + (1.410x 10- 52),4.049 + (1.860 x 10-43)) 13. Determine whether the following series converges or diverges. 10:4153 9k Σ k=0 yk + 11 Choose the correct answer below. O A. According to the Divergence Test, the series converges because lim a, #0. k0o B. According to the Divergence Test, the series converges because lim a = 0. k00 C. According to the Divergence Test, the series diverges because lim a, #0. k00 O D. According to the Divergence Test, the series diverges because lim a =0. k00 E. The Divergence Test is inconclusive. 3/10/2021, 12:54 7 of 9
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