       Re: Roots of a Jacobi polynomial

• To: mathgroup at smc.vnet.net
• Subject: [mg120644] Re: Roots of a Jacobi polynomial
• From: Bob Hanlon <hanlonr at cox.net>
• Date: Mon, 1 Aug 2011 06:57:55 -0400 (EDT)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com

```Restart Mathematica

eqlist = Rationalize[{
101.74 ==
a + ((0.055/(479248/c))*(352343 + ((479248/c)*a) - (158194*b/c))),
47205 + ((158194/c)*a) - ((61842/c)*b) == 68043.98 + (299.73*b),
460584 + (479248*(a^2)/(c^2)) - (158194*b*
a/(c^2)) + (61842*(b^2)/(c^2)) == 21986 + (3576*c)}];

NSolve[eqlist, {a, b, c}, Reals][]

{a -> 92.1341, b -> 103.075, c -> 158.517}

And @@ (eqlist /. %)

True

Bob Hanlon

---- Richard Kendall-Smith <richpks at gmail.com> wrote:

=============
Hi,

I'm trying to solve a set of non-linear equations by doing the following:

eqlist = {101.74 == a + ((0.055/(479248/c))*(352343 + ((479248/c)*a) -
(158194*b/c))),
47205 + ((158194/c)*a) - ((61842/c)*b) == 68043.98 + (299.73*b),
460584 + (479248*(a^2)/(c^2)) - (158194*b*a/(c^2)) + (61842*(b^2)/(c^2))
== 21986 + (3576*c)}

NSolve[eqlist, {a, b, c}, Reals]

But it interprets c as Musical Notation. I have tried altering the variables
to x y and z but then it comes up with a Visual Form error. I'm new to
Mathematica but I don't see why this is happening because aren't we
specifying a, b, c as variables to be solved?

Thanks,

Richard

```

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