Computing iterated derivatives of a function computed with a Runge - Kutta operator 

Clara Masse, John Masse and François Ollivier 

We define a Runge - Kutta operator for the differential equation y'=-y^2. 

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Derivatives of the Runge - Kutta operator. 

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Derivatives of the actual solution 1/(1+h). 

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Order 2 operator. 

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