Apps. and Interpretation for IBDP Maths Ebook 1 | Page 44

Your Practice Set – Applications and Interpretation for IBDP Mathematics
Chapter
5
Exponential and
Logarithmic Functions
SUMMARY POINTs
�
y
x
� : Exponential function, where a � 1
a
�
y� log a
x: Logarithmic function, where a � 0
� log log10
y � x � x : Common Logarithmic function
�
Properties of the graphs of
y
x
� :
a
a � 1
0�a
� 1
y increases as x increases
y -intercept � 1
y decreases as x increases
y tends to zero as x tends to y tends to zero as x tends to
negative infinity
positive infinity
Horizontal asymptote: y � 0
Solutions of Chapter 5
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