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(Practice) Determine the value of the following expressions, assuming
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Chapter 4 Solutions
C++ for Engineers and Scientists
- (Mathematical functions) a model of worldwide population, in billions of people, is given by this formula. Population = 6.0e0.02t Where t is the time in years (t=0 represents january 2000 and t = 1 represents january 2001). Using this formula, write a c++ program that displays a yearly population table for the years january 2005 through January 2010.arrow_forward(C PROGRAMMING ONLY) 1. Dealing With Monthsby CodeChum Admin We're done dealing with days. It's time to step up and now deal with months! Instructions: In the code editor, you are provided with a code in the main() which has 12 printf's. Each printf prints a month with its corresponding value. For this program, January is 1, February is 2, March is 3, and so on. When you run the initial code, you will encounter errors because these month names that have been printed don't exist yet.Your task is to create an enum data type which contains these month names as values so that when we run the code, there will be no more error.Do not edit anything in the main(). Output January = 1February = 2March = 3April = 4May = 5June = 6July = 7August = 8September = 9October = 10November = 11December = 12arrow_forward(Python) Numerous engineering and scientific applications require finding solutions to a set of equations. Ex: 8x + 7y = 38 and 3x - 5y = -1 have a solution x = 3, y = 2. Given integer coefficients of two linear equations with variables x and y, use brute force to find an integer solution for x and y in the range -10 to 10. Ex: If the input is: 8 7 38 3 -5 -1 Then the output is: x = 3 , y = 2 Use this brute force approach: For every value of x from -10 to 10 For every value of y from -10 to 10 Check if the current x and y satisfy both equations. If so, output the solution, and finish. Ex: If no solution is found, output: "There is no solution" You can assume the two equations have no more than one solution. ''' Read in first equation, ax + by = c '''a = int(input())b = int(input())c = int(input()) ''' Read in second equation, dx + ey = f '''d = int(input())e = int(input())f = int(input())arrow_forward
- Problem 2. (Playing the Waltz) Write a program called playwaltz.py that accepts from standard input, a sequence of 32 integers representing the 32 measures of a waltz, and plays the waltz to standard audio. Before playing any audio, your program must check if the inputs are correct, and if they are not, must call sys.exit (message) to exit the program with an appropriate error message. The following errors must be handled: • If the number of measures is not 32, exit with the message "A waltz must contain exactly 32 measures". • If a minuet measure is not from [1,176], exit with the message "A minuet measure must be from [1, 176]". • If a trio measure is not from [1,96], exit with the message "A trio measure must be from [1, 96]". - "/vorkspace/project3 $ python3 generatewaltz.py < data/mozart.txt | python3 playwaltz. py Directions: • Read the waltz measures from standard input into a 1D list. • Handle the input errors described above. • Play each of the first 16 minuet measures by…arrow_forward(c++) Write a program that takes user input describing a playing card with the following shorthand: A = Ace 2...10 card values J = Jack Q = Queen, etc. D = Diamonds S = Spades. etc. Ex. if the user enters QS then your program responds with Queen of Spadesarrow_forward(x) Write a program that solves the following system of differential equations in the interval [0,2] with the initial condition given next to it and h 0.1 step length.(Python Code) yi = 2y; +2ya Y1(0) = -1 y = 3y, + Y2 Y2(0) = 4arrow_forward
- (python) Find at least 12 issues in the code. A = int(input("Enter a number for A: ")) B = str(input("Enter a number for B: ")) C = int(input("Enter a number for C: ")) #Check that user input for A is not 0. if A = 0: print("Your coefficient for 'A' MUST BE a value greater than 0, otherwise your equation is not a quadratic!") int(input(Please enter a new value for a:")) = A import math: //Compute the discriminant. disc = (B*B) - (4*A*C) #Display the disciminant computed. print("\nThe discriminant of your equation is", str(disc) + ".") #Check the sign of the computed discriminant if disc == 0: print("This equation has 1 real solution.") x = (-B + math.sqrt(disc)) / (2 * A) print("The solution to your equation is:", x) elif disc > 0 print("This equation has 2 real solutions.") x1 == (-B + math.sqrt(disc)) / (2 * A) x2 == (-B - math.sqrt(disc)) / (2 * A) print("One solution to your equation is:", x1) print("The other solution to your equation…arrow_forward(a) Complete the following Table 1 by writing the infix and postfix expressions, respectively. (Note: Write curve bracket i.e() if necessary for the infix expression; use character x for multiplication; no spacing for answers) Table 1 Infix Postfix (A+B) / (CXD) AB/CD+X (b) Calculate the final value of the following postfix expression. Consider each number is represented in one digit decimal value. 23^2*6-82/11+/+ Answer =arrow_forward(QUESTION) Using the required programming language (python, matlab, etc.) plot the variation of pressure on the piston surface as a function of time until the piston moves 9 m, with the help of the following commands below. This problem will be solved for U_p =1, 4, 16, 64, 256 m/s. We'll assume that the time starts at t = 0 when the piston starts moving. (PLEASE TAKE A SCREENSHOT OF THE PLOTTING AND OTHER RESULTS.) Note: Since we don't have the exact time intervals or the rate at which the piston moves, we'll assume a constant speed and divide the distance by the speed to get the time taken. (QUESTION) COMMANDS import matplotlib.pyplot as plt import numpy as np # Given parameters diameter = 0.1 # meters length = 10 # meters initial_pressure = 10e3 # Pascals initial_temperature = 288 # Kelvin # Convert diameter to radius radius = diameter / 2 # Calculate initial and final volumes initial_volume = np.pi * radius**2 * length final_volume = np.pi * radius**2 * (length - 9) # Calculate…arrow_forward
- (C++ Programming language) There are following two major issues associated with cpp programs:• When a program is terminated, the entire data is lost. • If you have to enter a large number of data, it will take a lot of time to enter them all in the different programs.Suggest a solution and elaborate the same with the help of suitable examples.arrow_forward(C++) 2. Request a character from the console. Use an if/else to output if the character is an uppercase letter, a lowercase letter, or neither a letter nor a number. Example 1 Output (input in bold italics) Input a character: A A is an uppercase letter. Example 2 Output (input in bold italics) Input a character: k k is a lowercase letter. Example 3 Output (input in bold italics) Input a character: 5 5 is a number Example 4 Output (input in bold italics) Input a character: # # is not a number or a letterarrow_forward(c programming) Write a program using switch to input a letter (L) and and number of cars(C). The program will do the following according the value of L and displays it as shown belowarrow_forward
C++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology Ptr