So Im trying to prove the following inequality 8cos3θ−6cosθ=1. Ive tried a lot of different things, using substitutions for cos3θ, 2cosθ, pretty much everything and I cant seem to prove it. Any help would be appreciated.
Follow Math Help Forum on Facebook and Google+
That is neither an inequality nor an identity. WolframAlpha
Now, if you want to know for what values of you have , that is solvable, but not easy. You wind up with a cubic polynomial, which is solvable, but extremely difficult. Solution
View Tag Cloud