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## Homework Statement

Show that the addition of velocities implies that:

a)if V < c in any inertial frame, then V < c in any other.

b)If V=c in one inertial frame, then V=c in the other.

c)If V>c in any inertial frame, then V>c in any other inertial frame.

## Homework Equations

Vx'=(Vx-c)/(1-vVx/c^2)

## The Attempt at a Solution

I did b) and I can't do a) and c)