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Berthold Hamburger
01/12/13 6:11pm

Hello,

I want to solve two simple equations with NSOLVE to calculate the dimensions of a rectangular box that is open on top. The length of the box is wice the width and the volume and area of the box are respectively 40 cubic feet and 60 square feet.

I defined the area and volume:
a = xz + 2xy + 2yz
v = xyz

then substituted x with 2z:

a2 = a /. x->2z
v2 = v /. x->2z

a2 = 6 y z + 2 z^2
v2 = 2 y z^2

solved with NSolve:
step1 = NSolve[{a2 == 60, v2 == 40}, {y, z}, Reals] [[1,2]] //Column

which returns the results
{y->3.05701,z->2.5578}

I would want to get an output that returns values for all 3 variables x,y,z as in

{x->5.1156,y->3.05701,z->2.5578}

but somehow cannot find a way to do it

What would be the correct way for doing that?

Regards

Berthold Hamburger

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Subject (listing for 'NSolve output')
Author Date Posted
NSolve output Berthold Ham... 01/12/13 6:11pm
Re: NSolve output Bill Simpson 01/12/13 7:36pm
Re: Re: NSolve output Berthold Ham... 01/13/13 07:47am
Re: NSolve output Bill Simpson 01/12/13 9:14pm
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