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Dear Frank, It works, but it solves the equation for x. What I wanted to do is to substitute the a for the Cos[ x ] and get the equation. So I would like to convert eqn={Cos[2 x] == 0} into eqn2={a^2-1==0}using the... |
Discussions |
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Dear Frank, It works, but it solves the equation for x. What I wanted to do is to substitute the a for the Cos[ x ] and get the equation. So I would like to convert eqn={Cos[2 x] == 0} into eqn2={a^2-1==0}using the... |