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Engineering Maths · Q25

Transform Theory

Engineering and GATE · Engineering Maths · question 25

Q25

Let \[ f ( x ) = \ array*20c - ,\,\, if& - < x 0 \\ ,\,\, if&0 < x array .\] be a periodic function of period 2π. The coefficient of sin5x in the Fourier series expansion of f(x) in the interval [-π, π] is

Let {\text{f}}\left( {\text{x}} \right) = \left\{ {\begin{array}{*{20}{c}} { - \pi ,\,\,{\text{if}}}&{ - \pi < {\text{x}} \leqslant {\text{0}}} \\ {\pi ,\,\,{\text{if}}}&{0 < {\text{x}} \leqslant \pi } \end{array}} \right.     be a periodic function of period 2π. The coefficient of sin5x in the Fourier series expansion of f(x) in the interval [-π, π] is
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Answer
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C.
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Answer: Option A

Solution

Answer: Option A
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