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Jika A={1,2,3,4,5} dan B={x∣5

Jika A={1,2,3,4,5} dan B={x∣5

Akreditasi,org– Hai teman-teman, sekarang kita akan membahas tentang conmtoh soal Matematika siswa SMP. Soal ini berhubungan dengan Fungsi. Nah, bagi teman-teman yang sedang bingung bagaiman cara mengerjakan soal Fungsi. Berikut ini kita sajikan contoh soal beserta pembahasan mengenai materi tersebut. Silakan dibaca dengan teliti ya teman-teman setiap pembahasannya.

Soal:

Jika A={1,2,3,4,5} dan B={x∣5<x⩽10, S bilangan ganjil}, tentukan banyak fungsi yg terjadi. fungsi dari B ke A.

 

Jawabannya adalah 25. 

 

Pembahasan:

Perhatikan penjelasan berikut. 

Rumus banyak fungsi dari B ke A yaitu n(A)^(n(B)). 

Diketahui: 

A = {1,2,3,4,5} 

B = {x5<x10, S bilangan ganjil} 

Maka: A = {1,2,3,4,5} 

n(A) = 5 

B = {7, 9} 

n(B) = 2 

Sehingga: banyak fungsi dari B ke A 

= n(A)^(n(B)) 

= 5^(2) 

= 5 x 5 

= 25 

 

Jadi, banyak fungsi yg terjadi fungsi dari B ke A adalah 25.

 

Itulah contoh soal beserta  pembahasan mengenai Fungsi. Semoga pembahasan yang kita berikan bisa bermanfaat untuk teman-teman semua. Tetap semangat belajar dan terima kasih.

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