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【Maths】導數和求導公式

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基本初等函式公式

  1. C = 0 C' = 0 (C is constant)
  2. ( x a ) = a
    x a 1 (x^a)' = ax^{a-1}
    , 多項式
  3. (
    a x ) = a x ln a ( a > 0 , a 1 ) ; ( e x ) = e x (a^x)' = a^x\cdot \ln a(a>0, a \neq 1); (e^x)' = e^x
    , 指數函式
  4. ( log a x ) = 1 x ln a , ( ln x ) = 1 x (\log_a\vert x \vert)' = \frac 1 {x\ln a}, (\ln\vert x \vert)' = \frac 1 x , 對數函式
  5. ( sin x ) = cos x (\sin x)' = \cos x
  6. ( cos x ) = sin x (\cos x)' = -\sin x

基本求導法則

  1. 線性法則 ( a u + b v ) = a u + b v (au+bv)' = au' + bv'
  2. 積法則 $(uv)’ = u’v + uv’ $
  3. 商法則 ( u v ) = u v u v v 2 (\frac u v)' = \frac {u'v - uv'}{v^2}
  4. 鏈式法則 ( f ( u ( x ) ) ) = f ( u ( x ) ) u ( x ) (f(u(x)))' = f'(u(x))u'(x)

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