Asked by tyler

Find all solutions of the equation tan^5 x - 9tan x =0.
The answer is Ak\pi where k is any integer,
the constant A= ??.

Answers

Answered by Steve
tan^5 - 9tan = 0
tan(tan^4-9) = 0
tan(tan^2-3)(tan^2+3) = 0
tan(tan-√3)(tan+√3)(tan^2+9) = 0
so,
tan x = 0 or √3 or -√3

now it should be a cinch
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