maxima-lang-es — Spanish-language discussion of the Maxima computer algebra system

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 [Maxima-lang-es] Algebra From: Juan Pablo Carbajal - 2010-11-08 21:57:00 ```Queridos amigos, He estado practicanod algebra con maxima (si voy a trabajar con lagrangeanos necesito estar bueno en algebra!). Me estoy volviendo loco tratanod de obtener las expresiones en ciertas formas. En general estoy tratando de amontonar todos los parametros, para adimencionalizar o simplemnte para armar nuevos parametros compuestos. Aquí les paso un ejemplo que no he podido resolver Tengo la expresion (%i1) expr: -(m1*L1)/(4*m2*L2)+(cos(2*%beta-2*%alpha)*L1)/(2*L2)-L1/(2*L2)\$ y quero ponerla en la forma (%i2) expr2: (cos(2*(%beta-%alpha))- m1/(2*m2) -1)*(L1/(2*L2))\$ cuyas expansiones son iguales segun maxima, (%i3)is(expand(expr)=expand(expr2)); (%o1) true Al final me gustaría obtener algo como, (%i4) load("lrats")\$ facsum(fullratsubst([m1/2/m2=%mu, L1/(2*L2)=%psi],expr2),%beta-%alpha); Alguna sugerencia? Muchas gracias. -- M. Sc. Juan Pablo Carbajal ----- PhD Student University of Zürich http://www.ailab.ch/carbajal ```

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