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OpenStudy (anonymous):
Find all solutions in the interval [0, 2pi) 7tan^3x -21tan x=0
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OpenStudy (anonymous):
You can make a substitution: let y=tan(x), then solve \(\large 7y(y^2-3)=0.\)
OpenStudy (anonymous):
thank you!
OpenStudy (anonymous):
bear in mind all possible solutions
OpenStudy (anonymous):
You're welcome. You should get 4 solutions on that interval.
OpenStudy (anonymous):
0, pi/3, pi, and 4pi/ 3?
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OpenStudy (anonymous):
That's what I got. I think that's right.
OpenStudy (anonymous):
good
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