Chapter 9, Problem 2PP

(Simple computation) The formula for computing the discriminant of a quadratic equation ax^2 + bx+c = 0 is b^2 - 4ac. Write a program that computes the discriminant for the equation 3x^2 + 4x + 5 = 0. Class Name: Exercise01_01Extra

(python) prov_vac_status() takes a 2-D list (similar to the database) and an integer representing the province ID. This function returns three values; (i) the total number of unvaccinated patients, (i) the total number of partially vaccinated patients, and (i) the total number of fully vaccinated patients hospitalized in this province during the entire period. Note that these numbers include both the icu and the non-icu patients. >>> res1, res2, res3 = prov_vac_status(database, 12) >>> print(f"{res1}, {res2}, {res3}") >>> 194, 14, 118 >>> print(prov_vac_status(database, 35)) >>> (402, 28, 202) >>> print(prov_vac_status(database, 81)) >>> (0, 0, 0)

(Signal Handling) Read the documentation for your compiler to determine what signals are supported by the signal-handling library (). Write a program that contains signal handlers for the standard signals SIGABRT and SIGINT. The program should test the trapping of these signals by calling function abort to generate a signal of type SIGABRT and by having the user type c ( C on OS X) to generate a signal of type SIGINT.

(Prefix Operator) Consider the class dateType with data members day, month, and year. In this class write a functions to overload the pre-increment (++) and pre-decrement operators (--) to increase the date by a day and decrease the date by a day, respectively.

(Use python):The instructor of a lower division statistics class has assigned you a task: make a function that takes in a student’s score on a scale from 0 to 100 and assigns a letter grade based on the following grade boundaries.

(Card Shuffling and Dealing) Modify the program you developed in Exercise 17.23 so thatit deals a five-card poker hand. Then write functions to accomplish each of the following:a) Determine whether the hand contains a pair.b) Determine whether the hand contains two pairs.c) Determine whether the hand contains three of a kind (e.g., three jacks).d) Determine whether the hand contains four of a kind (e.g., four aces).e) Determine whether the hand contains a flush (i.e., all five cards of the same suit).f) Determine whether the hand contains a straight (i.e., five cards of consecutive facevalues)

(Use Python) Use the Design Recipe to write a function called compute_commission that returns the commission earned by a salesperson for the sale of a car. The function should consume two parameters, first a string representing the model of the car sold and the second an int representing the number of extra features that were sold. The commission follows these rules: The commission earned on a basic model (“basic”) is $1000, on a mid-range model (“mid”) is $1500 and on a luxury model (“luxury”) is $2000. You may assume that these are the only three string values that will be passed to your function. The salesperson earns $100 per extra feature sold. You may assume the value for the extra features is always greater than or equal to zero. Include a docstring! Write 3 assert_equal statements to test your function.

(phyton) create a vehicle claas with max_speed and mileage. define a function that changes the max speed with the setMax_speed(new speed) function. Create an object of this class change the max_speed value of this object to 200 with the help of the function you defined

(Evaluate expression) Modify Listing 20.12, EvaluateExpression.java, to addoperators ^ for exponent and % for remainder. For example, 3 ^ 2 is 9 and 3% 2 is 1. The ^ operator has the highest precedence and the % operator has thesame precedence as the * and / operators. Your program should prompt theuser to enter an expression. Here is a sample run of the program: Enter an expression: (5 * 2 ^ 3 + 2 * 3 % 2) * 4(5 * 2 ^ 3 + 2 * 3 % 2) * 4 = 160 Here is the Listing 20.12 to modify: import java.util.Stack; public class EvaluateExpression { public static void main(String[] args) { // Check number of arguments passed if (args.length != 1) { System.out.println( "Usage: java EvaluateExpression \"expression\""); System.exit(1); } try { System.out.println(evaluateExpression(args[0])); } catch (Exception ex) { System.out.println("Wrong expression: " + args[0]); } } /** Evaluate an expression */ public static int evaluateExpression(String expression) { // Create operandStack to store operands…