Page 11 - ACE YR IGCSE A TOP APPR' TO ADD MATH

1
16. The function f is defined by f(x) = 4 x − 1 2 2 − 5 for x  R.
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(a) Find the range of f.

[1]

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(b) State the coordinates of the turning point of the curves
(i) y = f(x).

= – 1
2

[1]
(ii) y = |f(x)|.

[1]

17. (a) Show that x + 4x + 9 can be written in the form of (x + a) + b and determine the values
2
2
of a and b.

[2]
(b) Sketch the graph of y = x + 4x + 9 and give the equation of its axis of symmetry.
2
y

x

[3]

Cambridge IGCSE
TM
8 Ace Your Additional Mathematics

Chapter 1 Add Math (1 to 12).indd 8 14/03/2022 12:16 PM