*E x1018   M x106   µ x10-6 ... *=3.14159   1erg=10-7J ... *H He Li Be B C O N F Ne ... *Th>Ra>Ac>Th>Ra>Rn>Po... *A .-   B ..-   C -.-.   D ..-   E . *Nord Norden Norte North * ... *Beaufort   F1 F2 F3 F4 F5 ... *Cambrian Ordovician ... * *sin(x) cos(x2) tan(3x) ... *sinh(x) cosh(x2) tanh(3x) ... *=1+½+¼+... =1+1/2!+1/3!... *    ex=   sin-1x= ... *logxn=   logexn= e2x= ... *x2+y2=1   E=mc2   A=r2 ... *x2+y2=1   E=mc2   A=r2 ... * * DigitalDan.eu

sinh(x) = (ex-e-x) / 2 cosh(x) = (ex+e-x) / 2 tanh(x) = (ex-e-x) / (ex+e-x) sech(x) = 2 / (ex-e-x) cosh(x) = 2 / (ex+e-x) tanh(x) = (ex-e-x) / (ex+e-x) sinh(x) = (x1/1!) + (x3/3!) + (x5/5!) + ... cosh(x) = (x0/0!) + (x2/2!) + (x4/4!) + ... (d/dx) sinh(x) = cosh(x) (d/dx) cosh(x) = sinh(x) (d/dx) tanh(x) = sech2(x) (d/dx) cosech(x) = -coth(x)cosech(x) (d/dx) sech(x) = -tanh(x)sech(x) (d/dx) coth(x) = -cosech2(x) 1/(x2-a2)½ = cosh-1(x/a) +c 1/(x2+a2)½ = sinh-1(x/a) +c 1/(a2-x2) = (1/a) tanh-1(x/a) +c sinh(x) = cosh(x) +c cosh(x) = sinh(x) +c tanh(x) = in(cosh(x)) +c cosech(x) = ln(tanh(x/s)) +c sech(x) = tan-1(sinh(x)) +c coth(x) = ln(sinh(x)) sinh2(x) = (-x/2) + (sinh(2x)/4) +c cosh2(x) = (x/2) + (sinh(2x)/4) +c sech2(x) = tanh(x) +c cosech2(x) = -coth(x) +c tanh2(x) = x - tanh(x) +c