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Let f be the 2 pi- periodical function

f left parenthesis x right parenthesis equals a minus sin open parentheses x over 2 close parentheses comma space space space space x element of open square brackets 0 comma pi close square brackets

which meets the condition Error converting from MathML to accessible text. if space x element of open square brackets negative pi comma 0 close square brackets

a) The value of a that makes the constant term of Error converting from MathML to accessible text. vanish:

b) The series of Fourier of f is: stack sum large left parenthesis with n greater-than or slanted equal to 1 below Error converting from MathML to accessible text. Error converting from MathML to accessible text. Error converting from MathML to accessible text.
c) The Error converting from MathML to accessible text. is pointwise convergent to f according to the Dirichlet criteria (T/F):
d) The Error converting from MathML to accessible text. cannot be uniformly convergent to f since f is not continuousfor all space x element of real numbers (T/F):
e) Using Error converting from MathML to accessible text., the result of sum for n greater-than or slanted equal to 1 of fraction numerator 1 over denominator 4 n squared minus 1 end fraction plus sum for n greater-than or slanted equal to 1 of fraction numerator open parentheses negative 1 close parentheses to the power of n plus 1 end exponent over denominator 4 n squared minus 1 end fraction is:
f) Using Error converting from MathML to accessible text., it can be proved that sum for n greater-than or slanted equal to 1 of fraction numerator n open parentheses negative 1 close parentheses to the power of n over denominator 4 n squared minus 1 end fraction equals fraction numerator square root of 2 pi over denominator 8 end fraction (T/F):
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