Ryacas-package            package:Ryacas            R Documentation

_R _i_n_t_e_r_f_a_c_e _t_o _y_a_c_a_s _c_o_m_p_u_t_e_r _a_l_g_e_b_r_a _p_a_c_k_a_g_e

_D_e_s_c_r_i_p_t_i_o_n:

     Ryacas allows one to use the yacas computer algebra package
     entirely from within R.  It takes an R expression, an R one line
     function or a yacas string and returns an R expression or a
     variety of other formats.  It can be used for symbolic
     mathematics, exact arithmetic, ASCII pretty printing and R to TeX
     conversions.  The main command is 'yacas'  and '?yacas' provides
     some information on installation and startup.

_D_e_t_a_i_l_s:

     The following are sources of information on '"Ryacas"':

       DESCRIPTION file      library(help = Ryacas)
       List of demo files    demo(package = "Ryacas")
       Demo file             demo("Ryacas")
       Demo                  demo("Ryacas-PrettyPrinter")
       Demo                  demo("Ryacas-Function")
       Demo                  demo("Ryacas-Sym")
       Demo                  demo("Ryacas-Expr")
       List Vignettes        vignette(package = "Ryacas")
       Vignette              vignette("Ryacas")
       This File             package?Ryacas
       Help files            ?yacas, ?yacasTranslations, ?yacmode, ?Sym
       Help files - Windows  ?yacasInstall
       News                  file.show(system.file("NEWS", package = "Ryacas"))
       Acknowledgements      file.show(system.file("THANKS", package = "Ryacas"))
       Wish List             file.show(system.file("WISHLIST", package = "Ryacas"))
       Home page             http://code.google.com/p/ryacas/

_N_o_t_e:

     There is a note in the help file of the yacas command that
     discusses a number of installation and startup issues.

_E_x_a_m_p_l_e_s:

     ## Not run: 
     print(yacas(expression(integrate(1/x, x))))
     print(yacas("Integrate(x)1/x"))
     x <- Sym("x"); Integrate(1/x, x)
     acos(Sym("1/2"))
     ## End(Not run)

