sum(many sin) != 0 : white noise energy | Desmos

Expression 3: "f" Subscript, "m" , Baseline left parenthesis, "x" , right parenthesis equals StartFraction, 1 Over StartRoot, "N" , EndRoot , EndFraction Start sum from "n" equals 1 to "N" , end sum, sine left parenthesis, 2 pi left parenthesis, left parenthesis, 10 plus 10 times StartFraction, "n" Over "N" , EndFraction , right parenthesis "x" plus "r" left parenthesis, "n" , right parenthesis , right parenthesis , right parenthesis

3

Expression 4: "N" equals 1000

4

Expression 5: "f" Subscript, 0 , Baseline left parenthesis, "x" , right parenthesis equals negative 4 plus StartFraction, 1 Over StartRoot, "N" , EndRoot , EndFraction Start sum from "n" equals 1 to "N" , end sum, sine left parenthesis, 2 pi left parenthesis, 15 times "x" plus "r" left parenthesis, "n" plus .3 1 "t" plus 19.7floor left parenthesis, "x" , right parenthesis , right parenthesis , right parenthesis , right parenthesis

5

Expression 6: "t" equals negative 590

6

7

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