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plot ln(abs( x^2*(x^2-47^2)*(x^2-88^2)*(x^2-117^2)*(2*cosh(x)) )), x = 0 .. 128
plot ln(abs( x^2*(x^2-47^2)*(x^2-88^2)*(x^2-117^2)*(2*cosh(x)) )), x = 0 .. 128
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