yacasInstall()
library(XML, lib = file.path(Sys.getenv("R_LIBS_USER"), "../2.7"))
> exp1 <- yacas(expression(Factor(x^2 - 1)))
[1] "Starting Yacas!"
以下にエラー socketConnection(host = "127.0.0.1", port = 9734, server = FALSE, :
コネクションを開くことができません
追加情報: 警告メッセージ:
In socketConnection(host = "127.0.0.1", port = 9734, server = FALSE, :
127.0.0.1:9734 cannot be opened
install.packages('Ryacas')
library(Ryacas)
yacasInstall()
library(XML, lib = file.path(Sys.getenv("R_LIBS_USER"), "../2.7"))
> exp1 <- yacas(expression(Factor(x^2 - 1)))
以下にエラー summary.connection(x) : コネクションが不正
install.packages('Ryacas')
library(Ryacas)
yacasInstall()
library(XML, lib = file.path(Sys.getenv("R_LIBS_USER"), "../2.7"))
options(yacas.method="system")
exp1 <- yacas(expression(Factor(x^2 - 1)))
exp1
> exp1
expression((x + 1) * (x - 1))