21. Find the sum of the series 100 +90 +80 ... -50, when n =16. a. 2800 b. 1600 c. 800 d. 400
21. Find the sum of the series 100 +90 +80 ... -50, when n =16. a. 2800 b. 1600 c. 800 d. 400
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Pls help ASAP on both and pls pls pls show all work and calculations
Transcribed Image Text:21. Find the sum of the series 100 +90 + 80 ... -50, when n=16.
a. 2800
b. 1600
c. 800
d. 400
22. Determine the equation of the inverse of f(x) = 15x − 65
a. ƒ−¹(x) =
=
b. ƒ−¹(x) =
c. f-¹(x) =
d. f-¹(x) =
x-65
15
x-15
65
x+65
15
x+15
65
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