∫[tan(3x+1)/cos^2(3x+1)]dx如何计算,
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∫[tan(3x+1)/cos^2(3x+1)]dx如何计算,
∫[tan(3x+1)/cos^2(3x+1)]dx如何计算,
∫[tan(3x+1)/cos^2(3x+1)]dx如何计算,
∫[tan(3x+1)/cos^2(3x+1)]dx
=∫tan(3x+1)sec^2(3x+1)dx
=∫tan(3x+1)dtan(3x+1)
=(1/2)tan^2(3x+1)+c.
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∫[tan(3x+1)/cos^2(3x+1)]dx如何计算,
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