Berin Loritsch <[EMAIL PROTECTED]> asks:
Speaking of accademic, anyone have a Java implementation of tanh(x)? The java.lang.Math class only has tan(x) or atan(x), but no hyperbolic function.
Can't recall the details off the top of my head, but I believe you just
need the natural log function to calculate it. I have it buried in a
Fortran program somewhere at home...
Here is a definition I found after googling:
http://mathworld.wolfram.com/HyperbolicTangent.html
I *think* that translates to:
public double tanh( double z ) { return (Math.exp(2 * z) - 1) / (Math.exp(2 * z) + 1); }
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