How to use bvalfit?

Question

I'm trying to use bvalfit to turn a boundary value problem into an initial value problem in Prime 7. I can find nowhere on the internet any resource that explains how to properly use bvalfit, and my current attempts are failing. Does anyone on this forum know how to use bvalfit? See my sheet below.

Can someone please tell me what's wrong with my sheet? Thank you!

For the record, yes I know this is an easy DE to solve. The point of this exercise is to get bvalfit working so that I can expand the application to other equations and standardize it in my worksheets.

terryhendicott · Answer

Hi,There is a better way for simply supported beams without using bvalfit.Uses the conjugate beam method to get slopes deflections and moments.Any number of generic loads can be applied at once.Just add elements to w1,w2,A, and B matrices that define a generic load to add more loads. Worksheet adjusts to suit.Any load including point loads as uniform loads over a very short distance can be input.A,w1 or w2 can be zero.  A uniform load is w1 = w2, A = 0 and B = L.w1, w2 is force/distance, A and B are distances.Matrices w1,w2,A,B goes without saying must be the same size.No check is made that the load distances A plus B are contained within the beam length

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