solving symbolic equation

Forum|Forum|9 years ago
September 26, 2016
8 replies
4499 views

Hello,

I'm having a hard time to find 'L' using a function - please find the attached file.

L should be around 7.

Thank you very much!

MJ

1_teng_method-mcdx.zip

Other

Best answer by Werner_E

I can't read Prime 3.1 files, but according your screenshot and text you simply are searching a numeric solution, not a symbolic one, right?

And then your last line isn't an equation so we have nothing which we could solve for L!

If you mean that the last expression should be zero, you could use one of the three following numerical methods to obtain the solution (it can't be 7 as L is a length).

Of course you could also use the symbolic "solve" to get all three solutions (the real one and the two conjugate complex ones). But the result would look a bit daunting.

In case you are curious - heres the symbolic solution

W

Werner_E

Answer

25-Diamond I

I can't read Prime 3.1 files, but according your screenshot and text you simply are searching a numeric solution, not a symbolic one, right?

And then your last line isn't an equation so we have nothing which we could solve for L!

If you mean that the last expression should be zero, you could use one of the three following numerical methods to obtain the solution (it can't be 7 as L is a length).

Of course you could also use the symbolic "solve" to get all three solutions (the real one and the two conjugate complex ones). But the result would look a bit daunting.

In case you are curious - heres the symbolic solution