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How to determine the number of solutions

by vastsky
Tags: determine, number, solutions
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vastsky
#1
Nov17-09, 08:02 PM
P: 1
Given a function in the form of: a0+a1*sqrt(2)*cos(pi*x)+a2*sqrt(2)*cos(2*pi*x)+a3*sqrt(2)*cos(3*pi*x)+. ..., where a0, a1, a2,... are known constant coefficients, sqrt(2) is the square root of 2, pi is 3.14159..., and the number of coefficients are predetermined. In addition, x is defined in (0,1). Is there a way to quickly determine how many solutions this function has? In other words, how many times it intersects with the x-axis? Thanks in advance!!
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