Use the formula (sin a-sin b=2 cos ((a+b) / 2) sin ((a-b) / 2)) to show that

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Use the formula $\sin a-\sin b=2 \cos ((a+b) / 2) \sin ((a-b) / 2)$ to show that $D_{N}(x) \sin (x / 2)=\frac{1}{2} \sin \left(N+\frac{1}{2}ight) x$. This proves (28.11).

Equation 28.11

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Measures Integrals And Martingales

ISBN: 9781316620243

2nd Edition

Authors: René L. Schilling

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Use the formula (sin a-sin b=2 cos ((a+b) / 2) sin ((a-b) / 2)) to show that

Question:

Dy(x)= sin (N+1)x 2 sin(x/2) (28.11)

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By definition N Dyx Ecos jx j1 Multiplying bot...View the full answer

Measures Integrals And Martingales

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