For the following exercises, use a graphing utility to find numerical or graphical evidence to determine the left and right-hand limits of the function given as x approaches a. If the function has a limit as x approaches a, state it. If not, discuss why there is no limit. 

According to the Theory of Relativity, the mass m of a particle depends on its velocity v. That is where m_o is the mass when the particle is at rest and c is the speed of light. Find the limit of the mass, m, as v approaches c⁻. 

m = mo 1-