# The p-th moment of wavelet function?

How can we obtain the equality $\sum_k (-1)^kk^pc_k=0$ from the moment equation of a wavelet function $\int t^p\psi(t)dt=0$ . I read this from a textbook but I do not understand how it is.

Reference: Insight Into Wavelets From Theory To Practice 2Nd Ed.

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Recommend you add the book title and reference where you read this. Regards – Amzoti Jan 4 at 18:02
Insight Into Wavelets From Theory To Practice 2Nd Ed. page:80, you can see from googlebooks – user1772257 Jan 4 at 19:11