I'm looking for a solution (graphic, numeric or analytic) for a function of the form: $$a^2\tanh(x)=\tan(ax),\quad a ≥ 1,\ x > 0$$ preferably using Mathematica. Any advice?
The documentation for PossibleZeroQ says: With the setting Method...
How can I express a trigonometric equation / identity in terms of a given trigonometric function? using following trigonometric identities ...