Page Write an ODE that is a mathematical model of the situation described. In a city with a fixed population, P, the time rate of change of the number, N, of those persons infected with a certain virus is proportional to the product of the number who have the viru the number that do not.
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- Given A = {1,2,3} and B={u,v}, determine. a. A X B b. B X BSuppose that the equation ax b .mod n/ is solvable (that is, d j b, whered D gcd.a; n/) and that x0 is any solution to this equation. Then, this equation has exactly d distinct solutions, modulo n, given by xi D x0 C i.n=d / fori D 0; 1; : : : ; d 1Imagine that you are facing an infinitely long wall, and you need to reach the only door in the wall. You may walk along the wall to your left or to your right, and at any time you may turn and walk in the opposite direction. You are in fog, so you only know where the door is when you are right in front of it. Assume that the door is an (unknown, but finite) integer number of steps away. As a function of the (possibly unknown) distance to the door, give an algorithm and cost for the minimum number of steps (in the worst case) that you must walk to reach the door in the following situations. For each situation, you should describe the (best) procedure that you could follow and analyze its worst-case cost: (a) You know the door is to your left. (b) You don’t know where the door is, but you know that it is exactly n steps away. (c) You don’t know where the door is, but you know that it is at most n steps away
- asnwer the following.Now and again a few words like "restriction" or "internationalization" are long that keeping in touch with them commonly in one text is very tedious. How about we consider a word excessively long, on the off chance that its length is totally in excess of 10 characters. All around very long words ought to be supplanted with a unique contraction. This shortening is made this way: we record the first and the last letter of a word and between them we compose the quantity of letters between the first and the last letters. That number is in decimal framework and doesn't contain any driving zeroes. Consequently, "restriction" will be spelt as "110n", and "internationalization» will be spelt as "i18n". You are proposed to automatize the most common way of changing the words with truncations. At that generally very long words ought to be supplanted by the truncation and the words that are not excessively long ought not go through any changes. Demonstrate the coding behaviorTo reduce traffic congestion in downtown Winburg, Indiana, the mayor convinces the city toset up a public transportation system. Bus-only lanes are to be established, and commuterswill be encouraged to “park and ride”; that is, to park their cars in suburban parking lots andthen take buses from there to work and back at cost of one dollar per ride. Each bus is tohave a fare machine that accepts only one dollar bills. Passengers insert a bill into the slotsas they enter the bus. Sensors inside the fare machine scan the bill, and the software in themachine uses an image recognition algorithm to decide whether the passenger has indeedinserted a valid dollar bill into the slot. It is important that the fare machine be accuratebecause, once the news gets out that any piece of paper will do the trick, fare income willplummet to effectively zero. Conversely, if the machine regularly rejects valid dollar bills,passengers will be reluctant to use the buses. In addition, the fare machine must be…
- 2. In Africa there is a very special species of bee. Every year, the female bees of such species give birth to one male bee, while the male bees give birth to one male bee and one female bee, and then they die! Now scientists have accidentally found one “magical female bee” of such special species to the effect that she is immortal, but still able to give birth once a year as all the other female bees. The scientists would like to know how many bees there will be after N years. Please write a program that helps them find the number of male bees and the total number of all bees after N years. Input Each line of input contains an integer N (≥ 0). Input ends with a case where N = −1. (This case should NOT be processed.) Output Each line of output should have two numbers, the first one being the number of male bees after N years, and the second one being the total number of bees after N years. (The two numbers will not exceed 232.) Sample Input 1 3 -1 Sample Output 1 2 4 7You are the chief commander of US Army; you have been deployed in an ongoing war training of defusing the mine. Mines are placed on the ground which can be considered as a gird of size N*M. Each block (i, j) has a mine in it if and only if the summation of the block coordinates is divisible by 2. Your task is to move from the first row to the last row. The mines will not blow if the given rules are followed: • If you are on even row you can move to any cell that is in the neighborhood • If you are on odd row, you can only go the odd row that has mine on that and same with the unmined row. You have to develop a python program to calculate the number of ways to reach row number N starting from row number 1. Test Cases: 4 8 Output: 10The population of a community is known to increase at a rate proportional to the number of people present at time t. If an initial population Po has doubled in 9 years, how long will it take to triple? Type your answer in years in the space provided below. Round your answer to one decimal place.
- Let (M) be the surface given by the following equation. x=y+4z? + 1 Which among the following options is true about (M)? (M) is an elliptic cone and it is represented by the following figure. (M) is an elliptic paraboloid and it is represented by the following figure IMus an eietic parapo.c 900 represented e.c oure. Me an e coc eoresented NhenIn a company, there are several branches. Let us consider a branch of that company having N employees, if the manager is allotted to that branch(s) then he is known to everyone else in that branch. Note that the property of "known to everyone" is unique to a manager. Your task is to find the manager in that branch. Input from the user in main ( ), the square matrix M where if an element of row i and column j is set to 1 it means that ith person knows jth person. You need to write a function managerId ( ) which returns the id of the manager if present or else returns -1. The function managerId ( ) takes two arguments - the square matrix of N *N and its size N. Call managerId ( ) from the main ( ) output the information about the manager. Assume all diagonal elements to be 1 (as everyone knows him/herself) and there is at most one manager in the company.Correct answer will be upvoted else downvoted. Computer science. You are provided a program with that comprises of n directions. At first a solitary variable x is doled out to 0. A while later, the guidelines are of two kinds: increment x by 1; decline x by 1. You are given m inquiries of the accompanying organization: question l r — what number of particular qualities is x appointed to if every one of the directions between the l-th one and the r-th one comprehensive are disregarded and the rest are executed without changing the request? Input The primary line contains a solitary integer t (1≤t≤1000) — the number of testcases. Then, at that point, the depiction of t testcases follows. The main line of each testcase contains two integers n and m (1≤n,m≤2⋅105) — the number of directions in the program and the number of questions. The second line of each testcase contains a program — a line of n characters: each character is either '+' or '- ' — addition and…