3. Piecewise functions are useful when the relationship between a dependent and an independent variable cannot be adequately represented by a single equation. For example, the velocity of a robot can be described by: 624- 3t 8 16 u(t) = otherwise where the velocity v of the robot is a function of time t. Write a function my.func that takes as input a vector t, realizes the above piecewise function, and returns the corresponding output vector v. You may use MATLAB's built-in function exp to calculate the exponential