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8304325c6c80c4a3e512ad9acf6efc06
mooc-rr
Commits
9fa08b43
Commit
9fa08b43
authored
May 07, 2025
by
8304325c6c80c4a3e512ad9acf6efc06
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---
title
:
"
Estimations
de
π
avec
R"
author
:
"
Votre
nom"
date
:
"
`r
format(Sys.Date(),
'%d
%B
%Y')`"
output
:
html_document
---
# À propos de pi
Voici la valeur de $
\p
i$ estimée avec différentes méthodes :
## Valeur directe
Utilisation directe de la constante intégrée
`pi`
:
```
{r}
pi
set.seed(42)
N <- 100000
x <- runif(N)
theta <- pi / 2
*
runif(N)
pi_buffon
<-
2
/
mean
(
x
+
sin
(
theta
)
>
1)
pi_buffon
set.seed(42)
N <- 1000
df <- data.frame(X = runif(N), Y = runif(N))
df$Accept <- (df$X^2 + df$Y^2 <= 1)
ggplot(df, aes(x = X, y = Y, color = Accept)) +
geom_point(alpha = 0.2) +
coord_fixed() +
theme_bw()
4
*
mean(df$Accept)
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