Code: Find all solutions of 2 cos(3x)^2 + sin(3x) I can simplify it all the way down to cos(6x) + sin(3x) = 0, however I get stuck here
Find all solutions of 2 cos(3x)^2 + sin(3x)
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Originally Posted by Ccrow Code: Find all solutions of 2 cos(3x)^2 + sin(3x) I can simplify it all the way down to cos(6x) + sin(3x) = 0, however I get stuck here I don't believe your expression is correct. Try it this way: So So your equation becomes: which you can treat as a standard quadratic. -Dan
Hello, Ccrow! I'll take a guess at what you meant . . . Find all solutions of: . Replace with . . then: . And we have the quadratic: . Quadratic Formula: . We must discard the positive square root: . So we have: . Therefore: .
Soroban you can have but you will be required to use complex numbers. I assume that he only wanted the real solutions any way, but just thought id point that out.
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