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Re: transposing an equation
*To*: mathgroup at smc.vnet.net
*Subject*: [mg26295] Re: transposing an equation
*From*: adam_smith at my-deja.com
*Date*: Sun, 10 Dec 2000 00:20:05 -0500 (EST)
*References*: <90kq3d$r25@smc.vnet.net>
*Sender*: owner-wri-mathgroup at wolfram.com
Chris,
Try the sample below.
In Mathematica you use a double equal sign (==)to represent an
equation. The single equal (=) assigns the results to a variable. In
the following code, the solutions of "x" are assigned to the name "sol"
In[4]:=
sol = Solve[y == A*x^2 + B*x + C, x]
Out[4]=
2
-B + Sqrt[B - 4 A C + 4 A y]
{{x -> -----------------------------},
2 A
2
B + Sqrt[B - 4 A C + 4 A y]
{x -> -(----------------------------)}}
2 A
In article <90kq3d$r25 at smc.vnet.net>,
"Christopher Deacon" <cdeacon at physics.mun.ca> wrote:
> Suppose y=a x^2+b x +c.
>
> How can I get Mathematica to solve for x (i.e., x=Ay^2+By+C) and give
me the
> values for the constants A,B,C?
>
> Chris
>
> --
> +-----------------------------+----------------------------+
> | Christopher Deacon | (709) 737-7631
> | Dept of Physics and Physical| cdeacon at physics.mun.ca
> | Oceanography
> | Memorial University of Nfld
> +----------------------------+-----------------------------+
> | http://www.physics.mun.ca/~cdeacon
> +----------------------------------------------------------+
>
>
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