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## Homework Statement

Einstein's E=mc2

## Homework Equations

E=mc2,

mass dilation, relativistic energy.

## The Attempt at a Solution

Does Einstein's E=mc2 involve mass and energy as relative values? or does the equation mc2=moc2+Ek ie: the same eqn just with mass dilation and relativistic energy involved...?

I'm doing a presentation and I want to say that the second eqn above is the relativistic one and that einstein's one is the general one, but I have conflicting sources. If einstein's E=mc2 is relative then why doesn't it include mass dilation?