In the following exercises, calculate the Fourier series of g(x) = on the interval -5,5|| ao 9(x) . 2 + b, sin an COS n=1 where ao = an = b, =

First image is the word problem context. Please answer PART F from second image. Please show all steps and explain with clear handwriting. No cursive if possible.

I just realize I could follow the question. It seems like not right . Could you check it for me?

Explain why A and -A always have the same reduced echelon form R.

The answer is not clear enough, please write in a way that can be read because I only have one try to submit.

I can't tell what the answer is supposed to be. None of the answers are the same as the options and the answer is option -g  There is no g. Can you please clear up the answer by writing it legibly.

Please answer part 1,2, and 3 of this question. Your time and help is greatly appreciated. Thank you!!!