*www.DigitalDan.co.uk *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 ... * * DigitalDan.eu

x2+y2+2ax+2by+c = 0     O=(-a,-b)     r=(a2+b2-c)½ (x2/a2)+(y2/b2) = 1 y = x2+mx+c y = mx-1+c x3+y3 = (x+y)(x2-xy+y2) x3-y3 = (x-y)(x2+xy+y2) x = (-b±(b2-4ac)½)/2a i = (-1)½ F = ma v = r a = 2r v2 = 2(a2-r2) T = 2/ f = /(2) v = f PE = mgh KE = ½mv2 s = ut+½at2 v = u+at v2 = u2+2as W = mg F = mv2/r F = (Gm1m2)/r2 C = Q/V V = Q/(40rr) f = (1/(2l))(T/m)½ f = v/(4l) GmT2 = 4R3 a = -2s f = 1/(2(LC)½) E = mc2 pV-nRT V=IR (1/R)=(1/R1)+(1/R2)+(1/R3) (1/C)=(1/C1)+(1/C2)+(1/C3) Q = It V = IR e = ½QV C = Q/V V = (1/(4or))(Q/r) a2+b2=c2 ax ay=ax+y x=n(n+1)/2 x2=n(n+1)(2n+1)/6 x3=n2(n+1)2/4 (a+cd)=n(2a+(n-1)d)/2