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↑ (tanx - secx )² = ↑tan²x + sec²x - 2 secx tanx dx
= ↑2tan²x + 1 dx - ↑2secxtanx dx
= - 2 ln [cosx] + x - 2 secx
semoga membantu, sukses ya dek
jgn lupa jadiin jawaban terbaik lho