三角函數之微分

三角函數之微分: (1) (sin x) = cos x. (2) (cos x) = − sin x. (3) (tan x) = sec2 x. (4) (cot x) = − csc2 x. (5) (sec x) = sec x · tan x. (6) (csc x) = − csc x · cot x. 反三角函數之 ...

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