## Sample problems from Section 2.4 are here and their solutions are here. |

## Sample problems from Section 2.3 are here and their solutions are here. |

## Sample problems from Section 2.2 are here and their solutions are here. |

## Sample problem from Section 2.1 is here and a solution is here. |

## Sample problem from Section 1.6 is here and a solution is here. |

## Sample problems from Section 1.5 are here and the solutions are here. |

## Sample problems from Section 1.4 are here and their solutions are here. |

## Sample problems from Section 1.3 are here and their solutions are here. |

## Sample problem from Section 1.2 is here and a solution is here. |

## Sample problems from Section 1.1 are here and the solutions are here. |