For all questions, write commands in Matlab (or Octave) that you would use to solve the exercises, not the result.

8. Write a function which takes as input the grade of a student (from 0 to 100) and outputs 1 or 0, depending on whether or not the grade is bigger than 50. 9. Write a function which computes the sum of the squares of the elements a vector. 10. Write a function which checks whether or not there is a positive element in a vector 11. Graph the function f(x)-3 sin 2r +1 and g(x)-cos 2r+e on the interval [0,8] Write a version with looping and another version without looping It should return 1 if there is, 0 if there isn't. in the same plotting window