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yesy7
 2 years ago
Find all solutions in the interval [0, 2π).
7 tan^3x  21 tan x = 0
yesy7
 2 years ago
Find all solutions in the interval [0, 2π). 7 tan^3x  21 tan x = 0

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RolyPoly
 2 years ago
Best ResponseYou've already chosen the best response.1Let u = tanx Then, the equation becomes \[7u^321u=0\]Factorize the left, you'll get\[7u(u^23) = 0\]Can you solve u from here?

yesy7
 2 years ago
Best ResponseYou've already chosen the best response.1I just did some of the work on scratch paper from the help of the lessons. Would you mind double checking my work?

RolyPoly
 2 years ago
Best ResponseYou've already chosen the best response.1I don't mind. Please post it :)

yesy7
 2 years ago
Best ResponseYou've already chosen the best response.1I got 0, pi/3, 2pi/3, pi, 4pi/3, 5pi/3?
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