data("iris")
head(iris)
## Sepal.Length Sepal.Width Petal.Length Petal.Width Species
## 1 5.1 3.5 1.4 0.2 setosa
## 2 4.9 3.0 1.4 0.2 setosa
## 3 4.7 3.2 1.3 0.2 setosa
## 4 4.6 3.1 1.5 0.2 setosa
## 5 5.0 3.6 1.4 0.2 setosa
## 6 5.4 3.9 1.7 0.4 setosa
iris_sorted <- iris %>% arrange(desc(Sepal.Length))
iris_filtered <- iris %>% filter(Petal.Length > 1.5)
median_sepal_length <- median(iris$Sepal.Length)
median_sepal_length <- median(iris$Sepal.Length)
iris <- iris %>%
mutate(tamanho = ifelse(Sepal.Length > median_sepal_length, "Grande", "Pequena"))
head(iris)
## Sepal.Length Sepal.Width Petal.Length Petal.Width Species tamanho
## 1 5.1 3.5 1.4 0.2 setosa Pequena
## 2 4.9 3.0 1.4 0.2 setosa Pequena
## 3 4.7 3.2 1.3 0.2 setosa Pequena
## 4 4.6 3.1 1.5 0.2 setosa Pequena
## 5 5.0 3.6 1.4 0.2 setosa Pequena
## 6 5.4 3.9 1.7 0.4 setosa Pequena
Equação 1: Equação de Navier-Stokes \[ \rho \left( \frac{\partial \mathbf{u}}{\partial t} + \mathbf{u} \cdot \nabla \mathbf{u} \right) = -\nabla p + \mu \nabla^2 \mathbf{u} + \mathbf{f} \]
Equação 2: Equações de Maxwell
\[ \nabla \cdot \mathbf{E} = \frac{\rho}{\epsilon_0}, \quad \nabla \cdot \mathbf{B} = 0 \] \[ \nabla \times \mathbf{E} = -\frac{\partial \mathbf{B}}{\partial t}, \quad \nabla \times \mathbf{B} = \mu_0 \mathbf{J} + \mu_0 \epsilon_0 \frac{\partial \mathbf{E}}{\partial t} \]
\[ P(A|B) = \frac{P(B|A) P(A)}{P(B)} \]
\[ \frac{\partial^2 \psi}{\partial t^2} - c^2 \nabla^2 \psi = 0 \]
\[ L(\theta; x) = f(x|\theta) \]
Lins et al. (2023) Otia and Bracci (2022) Jonathan (2020) Mergel et al. (2018) Cardoso Jr (2011)