
LKPD Matematika_Sinta Nuriah
Presentation
•
Mathematics
•
9th Grade
•
Easy
Sinta Nuriah
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FREE Resource
5 Slides • 4 Questions
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Open Ended
Tahap 2 : Kegiatan Menanya
Di media pembelajaran Powerpoint sudah dijelaskan tentang relasi , fungsi , dan fungsi linear. Sekarang, coba perhatikan manakah dari diagram disamping yang mendefinisikan fungsi?
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Open Ended
Tahap 3 : Kegiatan Mengumpulkan Informasi
Carilah informasi dari sumber lain !
Diketahui fungsi f(x)=x+1 dan g(x)=16−x2
Tentukan nilai fungsi-fungsi berikut, kemudian tentukan daerah hasilnya.
a. (f+g)(x) b. (f−g)(x) c. (f×g)(x) d. (gf)(x)
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Open Ended
Tahap 4 : Kegiatan Mengasosiasi
Selain diagram panah, Fungsi juga dapat dinyatakan dalam bentuk himpunan pasangan berurutan dan diagram cartesius.
Perhatikan permasalahan berikut !
Diketahui A={1,2,3,4} dan B={1,2,3,4,5,6,7,8}. Suatu Fungsi f:A→B ditentukan oleh f(x)=2x−1 .
Gambarlah fungsi f dengan diagram panah, himpunan pasangan berurutan dan diagram cartesius!
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Open Ended
Tahap 5 : Kegiatan Menyimpulkan
Secara umum, Fungsi dalam matematika mempunyai beberapa sifat yaitu fungsi surjektif, fungsi injektif dan fungsi bijektif.
Perhatikan gambar disamping !
Dari diagram disamping, jelaskan perbedaan antara fungsi surjektif, injektif dan bijektif.Kemudian buatlah kesimpulannya
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