In the theory of relativity, the mass of a particle with speed v is m=f(v)=m_{0}/√(1−v^{2}/c^{2}) where m_{0} is the rest mass of the particle and c is the speed of light in a vacuum.

Find the inverse function of f and explain its meaning.

_{0}/√(1−v^{2}/c^{2}) where m_{0} is the rest mass of the particle and c is the speed of light in a vacuum.

Find the inverse function of f and explain its meaning.