7/24/2019 Chapter 3 3.1

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Chapter 3: Quadratic Functions(Fungsi Kuadratik)ddMaths Form 4

[cikgubid/AMF4/Tue/W8/KYRHG]

Feb. 2016

Name:..

3.1: Quadratic Functions & Its Graph (Fungsi Kuadratik & Grafnya)

EXAMPLES

1. Find the values of kif the graphs of the following quadratic functions touch thex-axis.

Cari nilai-nilai k jika graf fungsi kuadraik beriku !e!""ng #aksi-x.

(a)

kxkkxxf !)!(")( " +++=

(#)

xkxkxg !)!()( " +=

". Find the range of values of ! if the graphs of the following quadratic functions

intersect thex-axis at two distinct points.

Cari jula nilai-nilai ! jika graf fungsi kuadraik beriku !e!""ng #aksi-x #ada dua

iik berlainan.

(a)

1)"1()( " +++= !x!!xxg

(#)

"

)"$("1)( x!xx$ =

!. Find the range of values of#if the graphs of the following quadratic functions do not

intersect or touch thex-axis.

Cari jula nilai-nilai # jika graf fungsi kuadraik beriku idak !e!""ng #aksi-x.

(a)

%$)( " += #xxxf

(#)

&1')"1()( " += xx#x$