math quiz

Quiz 2 Math 101, Winter 2013

Name:

Due Date: This Quiz is due in my hand or in my mailbox by 12:00pm Friday, January 31, 2014

Directions: Please write neatly and clearly. Show all work, absolutely all of it, to receive full credit.

Problem 1. (10 points) State the domain of the following functions. Please write your answers in interval notation.

a. f(x) = 93.3x94 + ππ+1 − 14x2 + 1

√ x2 + 9

b. g(x) = (x + 1)(x− 2) x2 −x− 2

c. h(x) =

√ x2 − 4 x

Problem 2. (5 points) Say we have a possible function f which behaves as follows: f(−1) = 1,f(0) = 1,f(5) = 1,f(8) = 1,f( 1

2 ) = 1. Does f represent a function? If not,

state why not. If yes, write its domain and range. [Interval notation not needed (or useful) here]

Problem 3. (5 points) Do the following points represent a function? If not, then state why. If yes, then state the domain and the range. [Interval notation not needed (or useful) here] (−1, 5), (0,−1), (5, 10), (7, 0), (10, 1), (0, 1), (1, 5)