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Exponentials and Logarithms

TRY IT:

Draw a rough sketch off( x ) = 5^xand label
the tail behavior asx --> -infinityand x --> infinity.

 

Do the same for

f( x ) = e^( -x )

 

f( x ) = ( 1 / 6 )^( -x )

 

f( x ) = ( 1 / 2 )^x

 

Which of these graphs are increasing?

Which of these graphs are decreasing?