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Formula q_90 - ArqMath20

Formula q_90 (Q88)

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Language	Label	Description	Also known as
English	Formula q_90	No description defined

Statements

arqmath formula id

q_90

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Defining formula

S_{1} = \frac{d (S_{2})}{d x} = \frac{d (\frac{1}{1 - x})}{d x} = \frac{1}{(1 - x)^{2}}

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