What does this function do? 1

[tugni925]

It has you guess a value for "H", then on the second line we see the "H" is part of an equation "L", and I am guessing this "L" was previously defined? Then "find(H)", finds a new value erasing the guess of 1 kN?

 

[IRstuff]

That's basically it. The bolded equal sign is the constraint, i.e., find an "H" such that the RHS expression is equal to "L" which is presumably defined above, along with q and a.

The assignment operation H:=find(H) assigns the found value that satisfies the constraint back into H for use below, but is not required otherwise, i.e., you could stop at "find(H) =" if you only what do see what the value is, and one could always copy the found value back into the guess value. The reason for forcing a guess value is that one might be looking at a constraint equation with multiple solutions, and the user might desire finding only one particular solution.

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[dik]

Thanks IRS... do you know what the function/equation does, and what the variables are?

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[IRstuff]

Maybe something to do with a catenary:

https://en.wikipedia.org/wiki/Catenary

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[tugni925]

Thanks IR, good to get that cleared up. If I may also ask; do you have any idea what this monstrosity might be doing?

 

[IRstuff]

F is a function whose roots at H1 and H2 are to be found. Beyond that, the outer root call seems a bit unnecessary, since the two roots are linearly combined with delta; one would think that just requires some algebraic manipulation. The inner root functions seem to have more parentheses than necessary as well.

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[dik]

Thanks...

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik