# Fourier Series Lecture #19 How to Study Fourier Series of Triangular Waveform By Engineering Classes

## Fourier Series lecture #19 How to Study Fourier Series of Triangular Waveform By Engineering Classes

I will briefly explain the following topics:-

**2.FOURIER COSINE SERIES**

A series said to be FOURIER COSINE SERIES which contain Fourier arbitrary constant ao, an and bn=0 if the function should be even function and interval, lie between –pi to pi.

**2.1 EVEN FUNCTION**

A function y = f(x) is said to be even, if f(-x) = f(x). The graph of the even function is always symmetrical about the y-axis.

**3.FOURIER SINE SERIES**

A series is said to be FOURIER SINE SERIES which contain Fourier arbitrary constant bn and ao=an=0 if fx should be odd function and interval lie between –pi to pi.

**ODD FUNCTION**

A function y=f(x) is said to be odd, if f(-x) = – f(x). The graph of odd function of the odd function is always symmetrical about the origin. For example, the function f(x) = in [-1,1] is even as f(-x) = = f(x) and the function f(x) = x in [-1,1] is odd as f(-x) = -f(x).

for Engineering Mathematics 3 final exam point of view Fourier series chapter for engineering mathematics 3 in the very important chapter for pass point of view as well as for getting good marks in Engineering mathematics M3.so student please more focus on Fourier series in Hindi chapter for success in exam

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