---
title: "Homework assignment #11"
author: "Milica Cudina"
date: "`r Sys.Date()`"
output: pdf_document
---
<!-- The author of this template is Dr. Gordan Zitkovic.-->
<!-- The code chunk below contains some settings that will  -->
<!-- make your R code look better in the output pdf file.  -->
<!-- If you are curious about what each option below does, -->
<!-- go to https://yihui.org/knitr/options/ -->
<!-- If not, feel free to disregard everything ...  -->
```{r echo=FALSE, warning=FALSE, include=FALSE}
knitr::opts_chunk$set(
  collapse = TRUE,
  fig.align="center",
  fig.pos="t",
  strip.white = TRUE,
  tidy = TRUE
)
```
<!-- ... down to here. -->

---

## Problem #1 ($4+2=6$ points)
Solve **Exercise 6.6** from the textbook.


## Problem #2 ($1+4+2+2=9$ points)
Solve **Exercise 6.10** from the textbook.


## Problem #3 ($9+2=11$ points)
Solve **Exercise 6.12** from the textbook. 


## Problem #4 ($2$ points)
Solve **Exercise 6.18** from the textbook.


## Problem #5  ($2+2+2+2=8$ points)
Solve **Exercise 6.20** from the textbook. 


## Problem #6 ($6$ points)
Solve **Exercise 6.22** from the textbook. 


## Problem #7 ($6+2=8$ points)
Solve **Exercise 6.24** from the textbook.