Write a code for the given conditions and problems in MATLAB and EXPLAIN PLEASE Use If-then-else to FIND and DISPLAY the roots of a quadratic equation. The coefficients are given by the user (refer to Module 6.1). Use the Nested IF to find the largest number in X, Y, Z. You may use the algorithm you created in the previous homework. Use SWITCH_CASE in displaying letter grade equivalent Grade A - Excellent! Grade B Well done Grade C Satisfactory Grade D You passed Grade F Better try again Others - Invalid grade 4. Consider the array X = [0.2 1.6 1.1 0.5 2 0.8 1.2 1.2 0.1] Write a program that extracts all elements greater than one from this array and writes these values into a new array. HINT: The new array will have a different number of elements than the first array. Before writing the code, determine by hand what the new array should be - and think about the process of filling in the new array sequentially, starting from the beginning of the array X.