47) - Resolva a inequação: ctgx ∙ ctgπ4 − 1 ctgx + ctgπ4 < 1√3
A) x ∈ ]−????6+ ????????2; ????3+ ????????2[
B) x ∈ ]−3????4+ 2????????; ????6+ 2????????[
C) x ∈ ]????...
A) x ∈ ]−????6+ ????????2; ????3+ ????????2[ B) x ∈ ]−3????4+ 2????????; ????6+ 2????????[ C) x ∈ ]????12+ ????????; 3????4+ ????????[ D) x ∈ ]−3????4+ ????????; −????12+ ????????[ E) x ∈ ]????12+ ????????2; ????6+ ????????2[
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