
Invers Fungsi
Presentation
•
Mathematics
•
10th - 12th Grade
•
Practice Problem
•
Easy
Ni Okassandiari
Used 22+ times
FREE Resource
6 Slides • 6 Questions
1
By Ni Luh Okassandiari
2
f merupakan fungsi yang memetakan anggota himpunan A ke himpunan B seperti gambar diagram panah di atas.
Domain f: A={p, q, r}
Kodomain f: B= {1, 2, 3}
Range f: R f={1, 2, 3}
Fungsi f
f‾¹ merupakan kebalikan dari fungsi f. Perhatikan f‾¹ memetakan anggota himpunan B ke himpunan A.
Domain f‾¹ : B={1, 2, 3}
Kodomain f‾¹: A= {p, q, r}
Range f‾¹ : R f‾¹= {p, q, r}
Fungsi f‾¹
3
Multiple Choice
Jika f adalah fungsi yang memetakan S ke T, maka fungsi inversnya memetakan
S ke T
T ke S
S ⋂ T ke T
S ⋂ T ke S
4
Fill in the Blanks
Jika f(2) = 5, maka f ‾¹ (5) = ...
Type answer...
5
Artinya, fungsi f memetakan 2 ke 5 (seperti diagram panah di atas).
f(2) = 5
Jika fungsi f pada gambar di kiri dibalik menjadi f‾¹, maka kita peroleh seperti gambar di atas.
f‾¹ memetakan 5 ke 2, sehingga
f‾¹ (5) = 2.
f‾¹ (5) = ...?
6
Perhatikan gambar fungsi f di samping.
Jika kita balik, maka f‾¹ bukan merupakan fungsi akibat ada anggota daerah asalnya yang tidak memiliki pasangan.
Tidak semua fungsi memiliki invers
7
Draw
Gambarkan panah agar f memiliki invers
8
Draw
Gambarkan panah agar f tidak memiliki invers.
9
Open Ended
Menurut pendapatmu, apakah f(x) = x² memiliki invers fungsi? Mengapa?
10
Jawaban soal di atas dapat ditemukan melalui link:
https://drive.google.com/file/d/1pUt-YwznCYligwUw7iCZXCxYz4ggtCln/view?usp=sharing
12
Poll
Bagaimana perasaanmu setelah mempelajari dasar-dasar dari fungsi invers?
Bakal susah nih, kayanya aku ga akan bisa 😥
Bakal susah nih, tapi aku pasti bisa dengan bantuan teman-teman dan Bu Guru 😊
Sejauh ini gampang sih, ke depannya semoga gampang juga 😁
Gampang lah, chill out 😉
By Ni Luh Okassandiari
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