As HG says, we see the speed of light. Also Plank's constant and the electron charge. Replacing these numbers by symbols and replacing ** by ^ shortens and clarifies the formula. For example at 6.62607004*10**(-34))**2)**299792458**2 you seem to be raising a number to the power of c^2. I don't think you mean this!
Best Regards, Jack Fearnley On Monday, 3 July 2017 14:02:51 UTC-4, HG wrote: > > What are you expecting to get ? I see inside few times the speed of light > ... What 's the meaning of the equation ? > > Le lundi 3 juillet 2017 15:46:37 UTC+2, Fjordforsk A/S a écrit : >> >> Hi, I tried many re-edits, and found a few errors along the way, however, >> there seems not to be any errors left, still nothing happens when issuing >> the plot3d command: >> >> plot3d(lambda x,y:(exp(I*2000*(1.60217662*10**(-19))/(299792458*6.6260700* >> ....: >> 10**(-34)))-(sqrt(I*(1.60217662*10**(-19))/(4*6.62607004*10**(-34)*2997924 >> ....: >> 58*2000))-((((1.60217662*10**(-19))**2)*2000**2)/(((6.62607004*10**(-34))* >> ....: >> *2)**299792458**2)))*(x**2+y**2)).real_part(),(x,-3*pi,3*pi),(y,0,2), adap >> ....: tive=True, color=cmsel) >> >> >> Thanks! >> > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.