Revision history [back]

This one seems to be that there is no translation from fricas to sage. Is this due to the atan ?

       sage:  var('x a')
       sage:  integrate(1/(1+a*cos(x)),x,algorithm="fricas")

NotImplementedError: The translation of the FriCAS Expression "atan(((cos(x)+a)*((-1)*a^2+1)^(1/2))/((a^2+(-1))*sin(x)))/(((-1)*a^2+1)^(1/2)) to sage is not yet implemented.

Using Sage version 8.3.beta6

This one seems to be that there is no translation from fricas to sage. Is this due to the atan ?

       sage:  var('x a')
       sage:  integrate(1/(1+a*cos(x)),x,algorithm="fricas")

NotImplementedError: The translation of the FriCAS Expression "atan(((cos(x)+a)*((-1)*a^2+1)^(1/2))/((a^2+(-1))*sin(x)))/(((-1)*a^2+1)^(1/2)) to sage is not yet implemented.

Using Sage version 8.3.beta6

This one seems to be that there is no translation from fricas to sage. Is this due to the atan ?

       sage:  var('x a')
       sage:  integrate(1/(1+a*cos(x)),x,algorithm="fricas")

NotImplementedError: The translation of the FriCAS Expression "atan(((cos(x)+a)*((-1)*a^2+1)^(1/2))/((a^2+(-1))*sin(x)))/(((-1)*a^2+1)^(1/2)) to sage is not yet implemented.

Using Sage And this one

version 8.3.beta6sage: var('x a b')
sage: anti=integrate(1/(b*x^2+a),x,algorithm="fricas")

NotImplementedError: The translation of the FriCAS Expression "log(((b*x^2+(-1)*a)*((-1)*a*b)^(1/2)+2*a*b*x)/(b*x^2+a))/(2*((-1)*a*b)^(1/2)) to sage is not yet implemented.

Sorry that I do not know if these are known issues or not. Thought to report them. If there are known, feel free to close this.reported at https://trac.sagemath.org/ticket/25628

Using Sage version 8.3.beta6

This one seems to be that there is no translation from fricas to sage. Is this due to the atan ?

       sage:  var('x a')
       sage:  integrate(1/(1+a*cos(x)),x,algorithm="fricas")

NotImplementedError: The translation of the FriCAS Expression "atan(((cos(x)+a)*((-1)*a^2+1)^(1/2))/((a^2+(-1))*sin(x)))/(((-1)*a^2+1)^(1/2)) to sage is not yet implemented.

And this one

sage: var('x a b')
sage: anti=integrate(1/(b*x^2+a),x,algorithm="fricas")

NotImplementedError: The translation of the FriCAS Expression "log(((b*x^2+(-1)*a)*((-1)*a*b)^(1/2)+2*a*b*x)/(b*x^2+a))/(2*((-1)*a*b)^(1/2)) to sage is not yet implemented.