Switch indeterminates in a polynomial

Switch indeterminates in a polynomial

plug(p, indeterminate, value)

Arguments

p	a polynomial
indeterminate	the indeterminate in the polynomial to switch
value	the value/indeterminate to substitute

Value

an mpoly object

Examples

# on an mpoly
(p <- mp("(x+y)^3"))
#> x^3  +  3 x^2 y  +  3 x y^2  +  y^3
plug(p, "x", 5)
#> 75 y  +  15 y^2  +  y^3  +  125
plug(p, "x", "t")
#> t^3  +  3 t^2 y  +  3 t y^2  +  y^3
plug(p, "x", "y")
#> 8 y^3
plug(p, "x", mp("2 y"))
#> 27 y^3

plug(p, "x", mp("x + y"))
#> x^3  +  6 x^2 y  +  12 x y^2  +  8 y^3
mp("((x+y)+y)^3")
#> x^3  +  6 x^2 y  +  12 x y^2  +  8 y^3

# on an mpolyList
ps <- mp(c("x+y", "x+1"))
plug(ps, "x", 1)
#> y  +  1
#> 2