*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) ex = (x0/0!) + (x1/1!) + (x2/2!) + ... log(1+x) = (x1/1!) + (x2/2!) + (x3/3!) + ... (d/dx) eax = aeax (d/dx) loga(x) = 1/(x loga(e)) (d/dx) eax = aeax ex = ex +c xeax = (eax(ax-1))/a2 +c cosec(x) = log(tan(x/2)) +c aeax = eax +c loge and ex loge(xy) = loge(x)+loge(y) loge(x/y) = loge(x)-loge(y) loge(xy) = y(loge(x)) (loge(x))(logx(e)) = 1 loge(x) = (loga(x))(loge(a))