Transcription of Calculus of Variations solvedproblems - cuni.cz
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Calculus of Variationssolved problemsPavel PyrihJune 4, 2012( public domain )Acknowledgement. The following problems were solved using my own procedurein a program Maple V, release 5. All possible errors are my Solving the Euler equationTheorem.(Euler) Supposef(x, y, y ) has continuous partial derivatives of thesecond order on the interval [a, b]. If a functionalF(y) = baf(x, y, y )dxattainsa weak relative extrema aty0, theny0is a solution of the following equation f y ddx( f y )= is called theEuler the Euler equation find the extremals for the following functional ba12xy(x) + ( xy(x))2 denote auxiliary functionff(x,y(x), xy(x)) = 12xy(x) + ( xy(x))2in the formf(x, y, z) = 12x y+z2 Substituting wex,y(x) andy (x) forx,yandzwe obtain the integrand in thegiven functional.
Calculus of Variations solvedproblems Pavel Pyrih June 4, 2012 ( public domain ) Acknowledgement.The following problems were solved using my own procedure in a program Maple V, release 5. All possible errors are my faults. 1 Solving the Euler equation Theorem.(Euler) Suppose f(x;y;y0) has continuous partial derivatives of the
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