To solve a system of Ordinary differential equations with initial conditions.

Let x: [0, infinity) -> R and y: [0, infinity) -> R be solutions to the system of differential equations: x' = - x y' = - sin y With initial condition: x(0) = y(0) = alpha, where alpha belongs to [0, pi) (a) Show that |x(t)| =< alpha for all t >= 0 (b) Show that | y(t) - x(t) | =< alpha( 1 - e^-t) for all t >= 0. ( e here is exponential function) Please justify every step and claim, and if you use any theorems refer to them.

Asymptotic stability of a system.

Determine the asymptotic stability of the system x' = Ax where A is 3 x 3 matrix A = -1 1 1 0 0 1 0 0 -2 ( first row is -1 1 1 second is 0 0 1 and third is 0 0 -2) More specifically, what stability conclusion(s) can be drawn? ( Justify your answer) Please I want a detailed solution. Thanks.

Asymptotic stability of a system

Determine the asymptotic stability of the system x' = Ax, where A is 2x2 matrix, A = alpha beta gamma delta ( that is. first row is alpha beta, second row is gamma delta) if it is known that determinant of A, det(A) = alpha*delta - beta*gamma > 0, and that the trace of A, Tr(A) = alpha + delta <0. Here alpha, beta, gamma, and delta are real constants. Please justify your answer, I want a detailed solution. Thanks.

Stability properties of zero solution to a nonlinear system

Use the function V(x,y) = x^2 + y^2 to analyze the stability properties of the zero solution of the nonlinear system x' = x + 2xy^2 y' = - 2x^2y + y More specifically, what stability conclution(s) can be drawn? ( Justify your answer) Please I want a detailed and clear solution. Thanks.

Middle school 6th grade math problem

Adam collects stamps. He has 18 bird stamps,9 flower stamps and 12 butterfly stamps. For a school project, he will display an equal number of each kind of stamp on a small poster boards. What is the greatest number of poster boards Adam can make if he uses all of the stamps?