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**fourier series pleeeease :(**

**Hi every one,**

I want your help please. I have a difficulty in answering these questions.

Actually it seems simple but I could not answer them because I did not understand the lesson very well.

This homework worths 5% and I have to hand it as soon as possible!

Find the fourier series expansion for the function over the specified intervals:-

1- f(x)= 1, -∏< x < ∏

2- f(x)= 0, -∏< x < 0 and x^2, 0< x < ∏

Find fourier cosine series:-

- f(x)= x, 0< x < ∏

Find fourier sine series:-

- f(x)= -x, 0< x < 1

I want your help please. I have a difficulty in answering these questions.

Actually it seems simple but I could not answer them because I did not understand the lesson very well.

This homework worths 5% and I have to hand it as soon as possible!

Find the fourier series expansion for the function over the specified intervals:-

1- f(x)= 1, -∏< x < ∏

2- f(x)= 0, -∏< x < 0 and x^2, 0< x < ∏

Find fourier cosine series:-

- f(x)= x, 0< x < ∏

Find fourier sine series:-

- f(x)= -x, 0< x < 1