Boundary value problem - Predefined cases

Select the test problem please:

	linear problem, n=2
	nonlinear problem, unique, sensitive, n=2
	nonlinear nonunique solvable, n=2	lower solution wanted upper solution wanted
	reentry problem, n=7	Select two components of y for plotting: index1=index2=1 is allowed (indices correspond to: speed, angle, normalized height, multipliers for endvalue of speed, angle and normalized height and endtime (constant as function of time). Clearly y7 is not an interesting case) index1 = Important index1 from 1,...,7 ! index2 = Important: index2 from 1,...,7 !

Here you may choose the initial guesses and some parameters for BVPSOL

I will use the default values

My own choice of input : The number of grid points (must be in {1,..,10}: m = The grid points : (must be in increasing order!) 0.0, 0.3, 0.6, 0.9, 1.2, 1.5 The initial guesses for the solution on this grid for the cases 1,2, 3 your input must satisfy the boundary conditions! (the example is for n=2 and m=6): 0,1, 1,0.5, 1.5,0.2, 1.5,-0.2, 1,-0.5, 0,-1 The desired precision in solving the nonlinear system for the initial values si Must be in [1.0e-16,0.01]: tol = The maximal stepsize of the integrator (should be smaller than the minimum griddistance/5) Must be in [1.0e-16,1]: hmax = The maximal order the integrator should try (requires 2maxord/2 evaluations of F for each step) Must be in {2,4,..,16}: maxord = The maximum number of Newton steps allowed, must be >= 2: itmax = The amount of output of the BVP solver (damped Newton solver) : info=-1 none, info=0 intermediate values, info =1 very detailed info =

Warning!!! - This may take some time.

Click on "evaluate", in order to submit your input.