Apps. and Interpretation for IBDP Maths Ebook 1 | Page 18

Your Practice Set – Applications and Interpretation for IBDP Mathematics
Chapter
3
Functions
SUMMARY POINTs
� The function y � f ( x)
:
1. f( a ): Functional value when x�
a
2. Domain: Set of values of x
3. Range: Set of values of y
�
�
�
Steps of finding the inverse function y � f 1 ( x)
of f( x ):
1. Start from stating y in terms of x
2. Interchange x and y
3. Make y the subject in terms of x
ax � b
Properties of rational function y �
cx � d
1.
1
y � : Reciprocal function
x
2.
a
y � : Horizontal asymptote
c
3.
d
x �� : Vertical asymptote
c
Solutions of Chapter 3
8
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