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sintcos
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cos________
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֪ĽK߅(jng)^(gu)c(din)P(x6)costsin____________tan____________
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Ô(sh)W(xu)w{C(dng)n攵(sh)r(sh)xnynxyĵڶ____
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֪f(x)ax(a1)
(1)Cf(x)(1)Ϟ(sh)
(2)÷CCf(x)0](mi)ؓ(f)(sh)
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CܞͬһȲ(sh)е(xing)
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ڸ(xing)Ĕ(sh){an}(sh)еǰn(xing)SnMSn.
(1) a1a2a3
(2) (1)딵(sh){an}ͨ(xing)ʽ
(3) Sn.
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AB{a2ab0}ABa2 013b2 014ֵ
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