1. Evaluate the following expressions without using MATLAB and write the answers in the space provided. Then, verify your answers by including these commands in your script file. a) x1 = 5+3 > 32/4 b) x2 = 2 * 3 > 10/5+1>22 c) X3 = 2 * (3 > 10/5) + (1 > 2)2 d) x4 = 5* 3 4* 4 5 ~2 * 4 - 2 + ~0 2. Write a script that first asks a user to input a word and then asks the user to input a letter (Hint: use the input command using the 's'option). Then, have your script compute the number of letters in the word and the number of times the letter appears in the word. For example, for the word engineering and the letter e, the command window output should be: There are 11 letters in the word engineering The letter e appears 3 times 3. Write a script which: a) uses the input commands to ask the user to enter values for x,y and R. b) determines whether a point with coordinates (x,y) lies inside or outside a circle centered at (0,0) and radius, R, and displays to the command window one of the following statements: The point lies within the circle. The point lies on the circle. The point lies outside the circle. (Hint: compute the distance from the origin to the point (x,y) using the formula, d = Vx2 + y2, and if dR, the point lies outside the circle)