ENGR 1731B-Computing for Engineers Homework \#7 Assigned: Mar 1. 2023 (Wed) Due: Mar 6.,2023(Mon) Print this sheet and include all your work. 1. Use if/else to solve this problem: If x is greater than or equal to zero, then assign the square root of x to the variable sqrt_ x and print out the result. Otherwise, print out an error message about the argument of the square root function and set sqrt_ x equal to zero. (MATLAB code and screenshot required) 2. Switch/Case Problem (MATLAB code and screenshot required) Write a program that allows a user to enter a string containing a day of the week ("Sunday," "Monday," "Tuesday," etc.) and uses a switch construct to convert the day to its corresponding number, where Sunday is considered the first day of the week and Saturday is considered the last day of the week. Print out the resulting day number. Also, be sure to handle the case of an illegal day name! (Note: Be sure to use the ' s ' option on function input so that the input is treated as a string.)