Cara Asyik Belajar Matematika: Relasi dan Fungsi (Bagian III)

Fungsi Linier
Fungsi linear merupakan fungsi dengan derajat (pangkat tertinggi pada variabel) satu.
Jika a dan b adalah suatu bilangan real, maka fungsi linear f(x) dinyatakan dengan :
This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

Contoh:

Dengan a = -2 dan b = 0
This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

Dengan a = 1 dan b = 7

Menentukan Nilai Fungsi Linier
Menentukan nilai dari fungsi linier adalah dengan cara mensubstitusikan nilai domain yang diketahui, contoh:
Diberikan suatu fungsi This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

. Nilai dari This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

adalah ....
Jawab:
This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

Sehingga nilai dari This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

adalah

.

Menentukan Rumus Fungsi Jika Diketahui Nilai dari Fungsinya
Contoh:
Fungsi f didefinisikan dengan rumus This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

. Jika

dan

, maka rumus fungsi f adalah ....
Jawab:
Untuk This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

, maka

.............................(1)
Untuk This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

, maka

..........................(2)

Dari (1) dan (2) kemudian kita eliminasikan

Untuk menentukan nilai b,kita dapat mensubstitusikan kedalam persamaan satu atau dua
This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

Sehingga rumus fungsi f adalah
This is the rendered form of the equation. You can not edit this directly. Right click will give you the option to save the image, and in most browsers you can drag the image onto your desktop or another program.

Cara Asyik Belajar Matematika

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Wednesday, 18 June 2014

Relasi dan Fungsi (Bagian III)

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