der: Symbolic differentiation of an expression

View source: R/calculus.R

derR Documentation

Symbolic differentiation of an expression

Description

Symbolic differentiation of an expression

Usage

der(expr, vars, simplify = TRUE)

Arguments

expr

A caracas_symbol

vars

variables to take derivate with respect to

simplify

Simplify result

Examples

if (has_sympy()) {
  x <- symbol("x")
  y <- symbol("y")
  f <- 3*x^2 + x*y^2
  der(f, x)
  g <- der(f, list(x, y))
  g
  dim(g)
  G <- matrify(g)
  G
  dim(G)
  
  h <- der(g, list(x, y))
  h
  dim(h)
  as.character(h)
  H <- matrify(h)
  H
  dim(H)
  
  g %>% 
    der(list(x, y), simplify = FALSE) %>% 
    der(list(x, y), simplify = FALSE) %>% 
    der(list(x, y), simplify = FALSE)
}


caracas documentation built on Oct. 17, 2023, 5:08 p.m.