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How to solve an equation in terms of the other variable

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Phil
Phil le 11 Déc 2012
I have the equation g^2+6*g*h+3h=0 for which I need to solve g in terms of h. Here is my attempt:
syms g h
g = solve('g^2+6*g*h+3*h=0')
For some reason this consistently only solves h in terms of g. Can someone point out to me what I am doing wrong?

Réponse acceptée

Walter Roberson
Walter Roberson le 11 Déc 2012
solve() has an algorithm for selecting which variable to solve for when it is not told which one to solve for. The algorithm is based upon the letter the variable name starts with.
You should specify which variable you want solved for:
g = solve('g^2+6*g*h+3*h=0', 'g')
  1 commentaire
Phil
Phil le 11 Déc 2012
Thank you very much. Quite helpful.

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Jeffery Devereux
Jeffery Devereux le 26 Fév 2018
you need to use two equal signs
g^2+6*g*h+3*h==0

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