5m Zen
1 + tan^2(x)
1 + tan^2(x) pictures 5
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1 + tan^2(x)
1 tan 2 x integration
1 tan 2 x 0
1 tan 2 x derivative
1 tan 2 x 1 tan 2x
1 tan 2 x sec 2 x
1 tan 2 x formula
1 tan 2 x identity
1 tan 2 x equals to
1 tan 2 x
1 + tan^2(x) trig identity
