2) MATLAB has several types of built-in math functions that can help you perform common operations. a) Write the MATLAB code that takes the absolute value of -134 b) Write the MATLAB code that stores a number 3 pi in a variable named x, then takes the cosine of x. c) Functions can also be applied to vectors. Assume you have a vector y, which contains the elements [4,9 16]. Write the MATLAB code to take the square root of y. What should the result be