# solution

1. ### Solution for a trigonometric equation

Could someone tell me if there is an analytical solution for the following equation? sin(bxL)sinh(bL)-sin(bL)sinh(bxL) = 0 Thank you!
2. ### Simplifying my Solution

Here is the question I have answered: List the first 3 positive prime numbers d in Z so that the quadratic integers in Q[ √ d] are precisely the ones of the form a + b √ d, where a and b are rational integers. List the first 3 positive prime numbers d so that the quadratic integers in Q[ √ d]...
3. ### Matlab Plotting Euler Iteration Against Exact Solution how to Set Initial Condition

Hi I have the following code to plot an approximation using Euler's iteration against the exact value of the function. I have used x and y for time and population when coding the Euler iterations and t and m for time and population when plotting the exact function. I can't work out how to...
4. ### what are all the algorithms involved in finding a solution with numerical methods ?

what are all the algorithms involved in finding a solution with numerical methods ? my questions sort of looks a bit like this ... ??
5. ### Which solution

Jane is a ticked seller for a passenger train with 3 wagons.After selling certain amount of tickets,there are 6 empty seats in the first wagon and 13 empty seats in the second wagon. She wants to guarantee 1 ticket sale for each wagon and makes a calculation. At least she must sell 23 tickets to...
6. ### Absolute Value equation with only one solution ?

Hello , Is there more than one solution to this equation ? 2|3x+8|-3=5|x-1|+6 I came up with x=-12 or x=-30 but only -30 satisfies the equation , if this is correct , how come there is only one possible solution ? shouldn't there be two ? Here are the steps i took to reach said solutions ...
7. ### The Real Line Example Problem With Solution - Still Confused

Example 6 I'm confused as to how they got x<1, 1<x<3, 3<x<5, and X>5. I understand coming to the final answer and setting up a sign chart, but I have no idea how looking at the question and taking the three factors and coming up with the regions from only that bit of information. Please help...
8. ### Particular Solution of the differential equation

Determine :- Particular Solution of the differential equation: (12)d^2y/dt2 - 3y = 0 Boundaries t=0, y=3, dy/dt=0.5 Thanks
9. ### Algorithm solution

Hello everyone. I am new here. and I am new in learning algorithm. I would like to ask if anyone know how to answer this type of question in this picture? for a, b and c I have no idea to answer and I want to compare with my answer. Help me.
10. ### Solution to DE

I need solution of Differential equation By Dennish J Hills Kindly give me pleaseee Sent from my LG-D802 using Tapatalk
11. ### Solution using Power Series please...

Solution for (x-1)y'-y=0 using power series please? I would appreciate the help!(Doh)a
12. ### Consider the equation cos(2.13t)=0.5. Find the smallest positive solution in radians

1. Consider the equation cos(2.13t)=0.5. Find the smallest positive solution in radians and round your answer to four decimal places. 2. Consider the equation tan(2.81t)=10.0. Find the smallest positive solution in radians and round your answer to four decimal places. Please explain. Thank you!
13. ### Check solution on singular matrix problem.

I solved a problem but wasnt sure if my solution was correct. The problem is number 30 in the textbook. I am attaching the question and solution below. Does my work make sense?
14. ### Can somebody check my solution: Control Theory with scrap values

Okay, so I have been working on this problem but want to know if I am correct or on the right lines. I set up the Hamiltonian Took the derivatives with respect to u and x but I am a little unsure about what I do after the boundary conditions and if I am correct with what I did with the scrap...
15. ### Find the General Solution (eigenvalues)

Find the general solution of the system: x' = -x+5y+4z y'= -x+5y-z z'=-6z So after setting it up in a matrix, I'm unsure of what to do next. Could anyone help? Thank you!
16. ### y'' + y' = xcosx

what is the particular solution of xcosx ? is it C(cosx ) + D(sinx ) ?
17. ### looking for new solution

hey guys I wish to now is there any solution for solve this kind of problems without identities? sqrt(14+8*sqrt(3)) = 2*sqrt(2)+b value of b? the value of b is sqrt6 but I need another solution to give me that result if x=sqrt(5) the resualt sqrt(9-4*sqrt(5)) of based on x the result is...
18. ### Analytical solution of the poisson equation

Hi, Does anyone know how to solve the following for an analytical solution? - nabla . sigma (u) = f if u = sin(pi*x)sin(pi*y) v = sin(pi*x)sin(pi*y) ? I know that I need to assign a value for u and v and then get values of x and y, but I'm not sure what to do afterwards! Many thanks ...
19. ### Simple Harmonic Motion - General Solution

(a) Show that x = a sin ωt + b cos ωt is a general solution of the equation, d^2x/dt^2 + kx/m = 0, and (b) determine the constants a and b in terms of the A and Φ of the equation, x = A cos(ωt + Φ).
20. ### general solution of a 2nd order ODE using substitution

The question is, by making the transformation U=Xa Y where α is a constant to be found, findthe general solution of Y''+(2/x) y'+9y=0 I'm really struggling on this I've already subbed in the new values for Y but I then became stuck. I can see that it a variation of a Bessel Equation and tried...