used Problem 5 (5 points) trunc(x) Let f (x) = you sign(x) trunc (x) define a function in Julia. Write the commands to define a function. What is the value of the function at x=-5.5? (Note that g in sign.) Sign(5.5) trunc(-55) =15.0 Problem 6 (5 points) Let f (x) = x < 5 ? 4x : 3 + 2*(x-1). Describe the rule of f by filling in these blanks: If x = 3 then f(x) is and if x = 8 then f(x) is Is the function f describes continuous? How did you check? (ation ) Amsider