Fourier sine series of piece wise defined function

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for $f(x)=x$ when $x∈[0,0.5]$
and $f(x)=1-x$ when $x∈(0.5,1]$

1-why Fourier "sine" series converges uniformly to f(x)?
2-Does it converge in $L^2$ sense?

My answer to the Question number 2, would be YES, because uniform convergence implies $L^2$ convergence. Am I correct? it there any contradiction case?

for the question Number 1, I am confused because of the word SINE. Would it differ the answer if it was Fourier series and not just Fourier sine series?

I know Weierstrauss M test, would you please help me make sure how to use that for this problem to prove uniform convergence?

Thank you