Hello world ### Hello world

Text -first item -second Item -Third item

1.list item 1 2.list item 2 3.one 4.two

This is a linear equation: \(y=2x+1\)

For matrix: \[ K= 5 \begin{bmatrix} 1 % 3 % 5\\ 2 & 12 & 0\\ 11 & 2& 10\\ \end{bmatrix} \] \[ K= 5 \begin{pmatrix} 1 % 3 % 5\\ 2 & 12 & 0\\ 11 & 2& 10\\ \end{pmatrix} \]

y=16
k=sqrt(y)
k
## [1] 4

library(ggplot2)
secretNumber <- 42
secretNumber
## [1] 42
expval2=4
xy=2011

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