What is an exponential function?

What are the key features of exponential graphs?

• The graphs have a?y-intercept?at (0, 1)
• The graphs?do not have any roots
• 
  • For?a?> 1?this is the?limiting value?when?x?tends to?negative infinity
  • For?0 <?a?< 1?this is the?limiting value?when?x?tends to?positive infinity
• The graphs?do not have any minimum or maximum points

?

What is a logarithmic function?

What are the key features of logarithmic graphs?

• The graphs?do not have a?y-intercept
• The graphs have?one root?at (1, 0)
• The graphs?do not have any minimum or maximum points