CK-12-Pre-Calculus Concepts

http://www.ck12.org Chapter 3. Logs and Exponents

Guided Practice

1. Completely analyze the following exponential function.
   f(x) =ex


2. Identify which of the following functions are exponential functions and which are not.

a.y=x^6

b.y= 5 x

c.y= 1 x

d.y=xx

e.y=x^12

3. Write the exponential function that passes through the following points:( 0 , 3 ),( 1 ,^3 e).

Answers:

1. Analyze in this context means to define all the characteristics of a function.
   Domain:xε(−∞,∞)
   Range:yε( 0 ,∞)
   Increasing:xε(−∞,∞)
   Decreasing: NA
   Zeroes: None
   Intercepts: (0, 1)
   Maximums: None