Test Mode Reading Mode Right = 0 Wrong = 0

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ln(sec2x)+c
ln sec ln(x) + c
ln sec(x) + c
ln(tan2x)+c
ln|tan(π/4 - x/2)| + c
ln|tan(π/4 + x/2)| + c
ln|secx - tanx | + c
ln| tanx -secx | + c