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You are not logged in. #4 20130526 22:18:10
Re: Roots of an Equationhi atuturay Solve this firstly for x plus alpha and hence get x. Bob You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #5 20130526 22:23:27
Re: Roots of an EquationLetting x = arccos(u) or arcsin(u) is another way, although the method is mostly the same as in posts #2 and #3. #6 20130526 23:31:22
Re: Roots of an EquationWon't squaring introduce extraneous solutions? The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment #7 20130526 23:54:59
Re: Roots of an Equation
But, in this example, as we only want 0 < x < 180, the single, correct solution may be found by squaring. You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei 