考研数学三公式大全

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A.积化和差公式： b

B.和差化积公式：①

②

③

④

2..余弦定理：

C

b

SS

C

C

b

p(p)(pb)(p)

p

b

为三角形内切圆半径)4.诱导公试sin

cos

tan

cot

-

-

+

-

-

-

+

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-

-

+

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2

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⑧

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tg

tg

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(

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⑤

7.半角公式：（符号的选择由

①

②

③

④

⑤

⑥

⑦

) )一阶微分方程：y

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)

F(x)

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