Problem 4. The outbreak isn’t going away because of the mutation in COVID-19. The angle of deformation of a bicycle, sitting in a park at the summit of a 45m tall building is 30 degrees. To determine the future course of COVID-19, Massard et al.  created an algorithm to study the effects of three distinct SARS-CoV-2 variations on the spread of COVID-19 in France from January through May 2021 (before vaccination was made available to all of the population).1 How far is it between the bike and the bottom of the building (in meters)? The models of time-delay-related viral and time-delay rumors as well as the optimal control models were examined in the above paragraphs. Below is a simplified diagram of the problem.

However, the model for spreading panic in time-delayed emergency situations was not discussed.1 In the above diagram, AB represents the distance between the bottom of the structure and bicycle. In reality emotions influence on the behavior of people and, in particular, anxiety. AC is the elevation of the building, i.e. 45 meters. In addition emotions possess three distinct characteristics which include holistic, process and individual variability, of which individual variation is the most prominent characteristic.1 In DBCD BCD, the angle is the right angle , and that depression’s angle is C i.e.

30deg. Individual differences in emotional expression are determined by the personality of the individual. Utilizing trigonometry ratios tan C within DBCD. Different people have different emotions perception capabilities.1 In this case, AC is BD, as well as AB is CD. i.e. Most of the time, those who are anxious have a tendency to be emotionally affected and irrational however, calm and rational people are more rational.

The distance between the base of the building and the bicycle is 77.85 meters. So, it is essential to be aware of the different personalities of individuals personalities in spreading anxiety in the face of emergencies. 5.1 This is a great way to simulate the process of emotional expression in actual life.

An electrician has to fix an electrical issue to resolve the power supply problem in the village. Thus, it is of major theoretical and practical value to investigate the effects of delay in time on the spreading of panic.1 The elevation of the pole, where the fault is at 7 meters.

The remainder of this research is structured in the following manner in Section 2. an algorithm for time-delayed spreading of panic is discussed. He would like to reach an area that is less than 1.5 meters from the pole’s top to fix the issue.1 In Section 3., the local and general stability of the two equilibriums are studied through mathematical analysis. What is the length of the ladder should he utilize to reach the desired location if the ladder is tilts at 60 degrees to the horizontal?

Find out how far the ladder should be away from the base of the pole (Take 3 = 1.73).1 We formulate the optimal control model, and we solve crucial conditions for an optimally designed solution using the maxima principle of Pontryagin in Section 4. Answer: First draw an outline of the problem you are facing like this: In this diagram, BC is the ladder, AD is the total length of the pole.1 In Section 4, the theoretical outcomes of analysis using numerical simulation are described in Section 5. Point C is where the electrician would like to get. A brief summary is presented in Section 6. According to the figure, CD is 1.5 meters and AD = 7 meters. 2 Model formulation. Thus, AC = AD – CD i.e.1 People in the group are aware that the occurrences of emergencies and the anxiety that results from the occurrence of emergencies can have a delayed impact.

AC = 7 + 1.5 meters = 5.5 meters In DABC B is 60 degrees while A has a right angle, or In DABC that is why that the total distance between the pole and ladder BC is 12.71 meters and the distance between the ladder and the pole’s foot AB is 3.17 meters.1 The model that is delayed corresponds more closely to the phenomena immediately following the occurrence. 6. We therefore develop a model of panic spreading that is delayed in time, based on the model of epidemic. The elevation angle of a cloud at an arbitrary point located in the lake’s water is 30deg. (I) In emergency situations the individual differences in traits (gender age, gender personality, etc.) can affect the individual’s ability to spread panic.1

Its angle that the shadow of the cloud’s shadow in the lake’s water from the same spot is 60deg. The main focus is on the influence of the individual’s personality upon panic spread. If the cloud’s height is 75 meters, then calculate the depth of the shadow. (Take 3 = 1.73).

So, in the light of studies on personality [47the group was divided into an unpatient group and the calm group.1 Solution Start by drawing an outline of the problem you are facing like this: In this diagram, AB is the water surface of the lake. The first is adventurous and reckless, and easily influenced by feelings of other people. The points C and D are the shadow of the cloud, respectively.

Contrarily, the second is shrewd and considerate and will remain calm when confronted with challenges.1 ABC ABD and ABC ABD are the right angles. A key characteristic of a well-informed group is that panic can get out of the group that is agitated. BC is the highest point of the cloud, i.e.

75 meters and BD represents the depth of the shadow. The impatient group is able to spread infection within the group.1 BAC BAD and BAD are the angles of elevation as well as that of depression, i.e. 30 degrees and 60 degrees . The rates of infection of both groups is a bilinear infection rate For DABC, i.e. (II) The number of vulnerable individuals rises quickly because of the lack of knowledge about the frequency of emergencies.1 In DABD, The logistic model can greatly take into account elements that influence the rate at which the number is restricted by the environmental (e.g. emergency) so the models for growth in the logistic sector are more suited for the specific circumstances. The depth of the shadow or shadow’s depth is 224.46 millimeters.1

So, in the anxious group as well as the calmer group, the vulnerable individuals are governed by the classic single-species logistic growth model. Problem 7: Take a look at this diagram where K is the capacity of carrying as well as r being the fundamental rise rate constant. If the ACB is right, then determine that angle between the AB as well as the The CD (Take 3. = 1.73). (III) In times of emergency due to the length of period of time that is required for susceptible people to get in contact with the surrounding anxious people to develop the symptoms of people, we define the specific time as the spread time, which is determined by t1 and t 2 .The speed of growth for the patient group that is infected depends not only on the number at the moment before between t1 and t1, as well as the chance that the affected impatient group was able to survive from the time that t1 – t1 occurred until the moment of t .1 Solution Solution: In DACD you can use Trigonometry Ratio sin A, i.e.

Similar to changing the speed of progression for the affected level-headed population is dependent not only on the number at the moment before that t was t, as well as the chance that the affected level-headed population lived from the moment the t-t-2 point to the moment of t .1 And, i.e. (IV) The people who are cured of the patient group as well as the calm group have the possibility of permanent immunity. In DBCD you must use the trigonometry ratio, i.e. The model is described as follows. BC = CD = 2.5 m. d S 1 d t = r 1 S 1 ( 1 – S 1 K 1 ) – b 1 I 1 S 1 – d S 1 , d I 1 d t = e – d t 1 b 1 S 1 ( t – t 1 ) I 1 ( t – t 1 ) – ( d + d 1 ) I 1 , d R 1 d t = d 1 I 1 – d R 1 , d S 2 d t = r 2 S 2 ( 1 – S 2 K 2 ) – b 2 I 1 S 2 – d S 2 , d I 2 d t = e – d t 2 b 2 S 2 ( t – t 2 ) I 1 ( t – t 2 ) – ( d + d 2 ) I 2 , d R 2 d t = d 2 I 2 – d R 2 . ( 3 ) From the figure given: i.e.1

In this model the patient group and the calm group could be split into three states that include susceptible, infected and recovering, represented by S 1, I 1 , as well as R 1, and S 2, I 2 , as well as R 2 at the time t according to. AC is AB BC + BC which is AB + BC = 4.33 m + 2.5 meters =1.83 m.1 The d value represents the death rate of the person. Thus, AB = 1.83 m and CD = 2.5 m. B 1 and B 2 represent the mortality rates of the susceptible impatient group as well as the level-headed group as well as the level-headed group.

Problem 8 Problem 8: Problem 8: A 1.5 meters tall boy is looking at two buildings.1 D 1 and 2 represent the rates of recovery of the vulnerable impatient group as well as the level-headed group as well as the level-headed group. The two buildings are both taller than of 12 meters. The t 1 and the t2 are the time delays for the susceptible impatient group as well as the level-headed group.1

The angles of elevation at the building’s top is 45deg and 60deg. We will assume that the original conditions are.