### Numerical Methods for Differential Equations: Recursive Formula

5. Knowing that the recursive formula was obtained from a differential equation, try to determine the original equation.

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5. Knowing that the recursive formula was obtained from a differential equation, try to determine the original equation.

In this problem we will use Euler's method to find an approximation for e. Consider the differential equation f' = f with initial data f(0) = 1. We know the solution is f(t) = e', therefore f(1) = e. Using as step size h = 0.5, and fo = 1, use Euler's method to obtain f20. Your answer is an approximation to f(t10) = f(1).

Please see the attached file for the fully formatted problems. Please show me how to solve question 1 part d of lecture two in the "non elegant" way. I'd like you to "work backwards from what you want to prove until you arrive at a true formula" l like in part C of question 1. I've provided the solutions so you can see

A mobile is hanging from the ceiling with two metal pieces strung by cord, one under another. I only have the masses for each figure. How do I determine the tension on the top cord and then how do I determine the tension on the bottom cord?

Solve by using series representation and summing the series to get a Poisson integral formula for this Neumann boundary condition problem. Please see the attached file for the fully formatted problems.

Lim f(x) where f(x)={2-x, x<1 x->1- {2x-x^2, x>1

A novice inventor has invented an exciting new toy for dogs. He believes it will cost him $.95 per toy to produce these doggy marvels. Unfortunately, to get mass-producing these items, he has had to spend $6000 of his hard earned money and countless hours observing animals. He plans on selling the toys for $1.69 each. a.

Complete the square to determine the radius and center of the circle. x^2+y^2+2x-8y+12=0 and sketch its graph.

Use parametric representation in exercise 10 for the oriented circle C0 there to show that....where a is any real number other than zero and where the principal branch of the integrand and where the principal value of R^G are taken. Please see the attached file for the fully formatted problems.

Please see the attached file for the fully formatted problems. Problem: Assume you are given a non-negative function K(s). We would like to construct a plane curve B(s) with curvature K(s)..... HINT: Use the Fundamental Theorem of Calculus to show B has unit speed and then compute dT/ds. Problem: I. If K(s) = ... usin

Please see the attached file for the fully formatted problems. Consider the diffusion equation: on the time-dependent domain where a is a constant. We wish to solve the initial and boundary value problem having for and a prescribed . Thus, u is prescribed as a function of time on the left boundary that moves at

What is the x-coordinate of the centroid of the closed region Please see attachment for function and region description. Please explain why the answer is correct. Thank you!

∫(2-x)^6dx

9. The rate of change of the population of a town in Pennsylvania at any time t is proportional to the population at that time. Four years ago, the population was 25,000. Now, the population is 36,000. Calculate what the population will be six years from now. A. 43,200 B. 52,500 C. 62,208 D. 77,760 E. 89,580

8. What is the solution of the differential equation dy/dt = 4y2t3, subject to the condition y(1) = 1? A. y = 1/(2-t4) B. y = 2 - 1/t4 C. y = t4 D. y = 1/t4 E. y = e^(1-t2)

6. A population grows exponentially. At 10 years, the population is 1,000. At 20 years, it is 2,000. What was the approximate population at 5 years? A. 140 B. 250 C. 500 D. 700 E. 750

5. Let y(x) be the solution to the differential equation (x2+1)1/2dy - (x/y)dx = 0 satisfying y(31/2) = 3. Then [y(81/2)]2 = A. 6 B. 8 C. 10 D. 11 E. 13

The rate of decay of a radioactive substance is proportional to the amount of the substance present. Two years ago there were 5 grams of substance. Now there are 4 grams. How many grams will there be 4 years from now? A. 16/25 B. 2 C. 64/25 D. 16/5 E. 25/4

The amount of a chemical increases at a rate equal to the product of elapsed time (in minutes) and the amount of the chemical. If the initial amount of the chemical is 10 units, what is the number of units at 4 minutes? A. 14 B. 10 + e8 C. 10 + e16 D. 10e8 E. 10e16

Which of the following is a solution to the differential equation: ylny + xy' = 0 for x > 0 ? A. xlny = 1 B. xylny = 1 C. (lny)2 = 2 D. -y(lny)(lnx) = 1 E. lny + (x2/2)y = 1

Sketch the graphs of each pair of circles to determine the number of points of intersection. If the circles are tangent or fail to intersect, say so. Then solve the system. 2 2 2 2 x + y - 4y= 0, x = y - 2x = 4 How do I go about solving?

This question is concerned with finding the solutions of the second order simultaneous equations where a = 38, b = -9, c = 378, d = -79 (i) Find the particular solutions to the differential equations which satisfy the initial conditions x = -10 and y = 7 at t = 0 together with the condition at t = 0.. For this part

Please see the attached file for the fully formatted problem. Use superposition to solve: with boundary conditions: and initial condition

Please see the attached file for the fully formatted problems. Let x,y denote Cartesian coordinates and denote polar coordinates, and let . Using the chain rule show that (you may assume that ). Hence show that

The height h of a right circular cone is 20 cm and is decreasing at the rate of 4 cm/sec. At the same time, the radius r is 10 cm and is increasing at the rate of 2 cm/sec. What is the rate of change of the volume in cm3/sec? (Note: The volume of a right circular cone is V = 1/3p r^2h.)

Please see the attached file for the fully formatted problem. If lim x --> 0 f(x) = 3 then lim x--> 0 (e^(2x)-1)/(x f(x)) = ?

Please use L'hopital's Rule to find the limit of the following expression Lim x-->0 (xsin(2x))/(1-cos(x))

A) Let the temperature u inside a solid sphere be a function only of radial distance r from the center and time t. Show that the equation for heat diffusion is now: {see attachment}. This is not an exercise in doing a polar coordinate transformation. First you should derive an integral form for the equation by integrating over a

Given the following table...(a) Is y a function of x? Explain your answer. (b)Is x a function of y? Explain your answer. (See attachment for full question)

In solving transport phenomena problems, we use "boundary conditions" and "initial conditions". In mathematical terms, (that is, types of variables), what are "boundary conditions" and what are "initial conditions"