Hyperbolic sinus

[angelo2449]

Hi guys,

I'm looking for a little program or a function that calculates the hyperbolic sine of X.

Do you know anything?

Thank you.

[tenochtitlanuk]

From Wikipedia definition..

   for i = -5 to 5
       print i, sinh( i)
   next i

   wait

   function sinh( x)
       sinh =( exp( 2 *x) -1) /( 2 *exp( x))
   end function


[angelo2449]

Thank you,
do you also have the reverse function? (Arcsinh)
Thanks again.

[tenochtitlanuk]

Again, straight from Wikipedia...

   for i = -5 to 5
       print i, using( "###.###", sinh( i)), using( "###.###", asinh( sinh( i)))
   next i

   wait

   function sinh( x)
       sinh    =( exp( 2 *x) -1) /( 2 *exp( x))
   end function

   function asinh( x)
       asinh   =log( x +( x^2 +1)^0.5)
   end function