1f ( x ) → − f ' ( x )f 2 ( x )
f − 1 ( x ) → 1f ’ ( f − 1 ( x ) ) F ( x ) = ∫ f ( x ) dx | f ( x )g ( x ) → f ' ( x ) ⋅ g ( x ) − f ( x ) ⋅ g ' ( x )g 2 ( x ) Eksempel: f ( x ) = x3 g ( x ) = 5 ⋅ ln x h ( x ) = f ( x )g ( x ) ddx h ( x ) = f ' ( x ) ⋅ g ( x ) − f ( x ) ⋅ g ' ( x )g ( x )2 = 3x2 ⋅ g ( x ) − f ( x ) ⋅ 5xg ( x )2 = 3x2 ⋅ ( 5 ⋅ ln x ) − x3 ⋅ 5x( 5 ⋅ ln x )2 Web-matematik |
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