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MistaTwista
@MistaTwista
July 2022
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Решить cos²x+3cos x=0
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ukinbid
Cos^2 x+3cosx=0
cosx(cosx+3)=0
cosx=0
x=π/2+πk,k∈z
0 votes
Thanks 2
Bulik228
Cosx(cosx+3) = 0
1)cosx = 0 или 2)cosx+3=0
x =
∈ z;
2) cosx = -3
x= +- (π-arccos(3)) + 2πk, k∈z
0 votes
Thanks 1
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Answers & Comments
cosx(cosx+3)=0
cosx=0
x=π/2+πk,k∈z
1)cosx = 0 или 2)cosx+3=0
x = ∈ z;
2) cosx = -3
x= +- (π-arccos(3)) + 2πk, k∈z