Exercises 2 Let f(x) be a function of period 27 such that *- x, 0

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.2: Exponential Functions
Problem 31E
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Exercises 2
Let f(x) be a function of period 27 such that
f(x) =
T - x, 0<a <T
%3D
0,
T < r < 27
a) Sketch a graph of f(a) in the interval -27 <x < 27
b) Show that the Fourier series for f(a) in the interval 0 <r < 2n is
1
cos 3.r+
32
1
cos 5a +
52
cos r +
4
1
1
1
+ sin r + sin 2.r + sin 3r + sin 4.r +...
3
2
4
c) By giving an appropriate value to a, show that
1
+
32
1
8.
52
Transcribed Image Text:Exercises 2 Let f(x) be a function of period 27 such that f(x) = T - x, 0<a <T %3D 0, T < r < 27 a) Sketch a graph of f(a) in the interval -27 <x < 27 b) Show that the Fourier series for f(a) in the interval 0 <r < 2n is 1 cos 3.r+ 32 1 cos 5a + 52 cos r + 4 1 1 1 + sin r + sin 2.r + sin 3r + sin 4.r +... 3 2 4 c) By giving an appropriate value to a, show that 1 + 32 1 8. 52
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