
MTK KELAS XI
Authored by Ekalia Virgonita
Mathematics
11th Grade
Used 3+ times

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25 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 4 pts
Diketahui S(n) adalah rumus dari 3 + 6 + 9 + 15 + ... + 3n = n ( n + 1 ).
Langkah pertama dalam pembuktian pernyataan tersebut dengan induksi matematika adalah ...
S(n) benar untuk n = -1
a. S(n) benar untuk n bilanganrasional
S(n) benar untuk n = 1
S(n) benar untuk n = 1
S(n) benar untuk n bilangan bulat
2.
MULTIPLE CHOICE QUESTION
3 mins • 4 pts
Diketahui S(n) adalah rumus dari :
Diketahui S(n) adalah rumus dari :
2 + 5 + 10 + 17 + ... + (n2+1) = 1/6 (n+1)(2n2+n+6).
Jika S(n) benar untuk n=k, maka ......
2 + 5 + 10 + 17 + ... +(k2+1)= 1/6 (k+1)(2k2+k+6).
(k2+1) = 1/6 (k+1)(2k2+k+6).
2 + 5 + 10 + 17 + ... + (n2+1) = 1/6 (k+1)(2k2+k+6)
(n2+1) = (n+1)(2n2+5n+9)
2 + 5 + 10 + 17 + ... + (k2+1) = (k+1)(2k2+5k+9).
3.
MULTIPLE CHOICE QUESTION
3 mins • 4 pts
Dengan induksi matematika , n(n+3) dengan n bilangan asli akan habis dibagi….
2
4
3
6
5
4.
MULTIPLE CHOICE QUESTION
3 mins • 4 pts
2. Diketahui S(n) adalah sifat (34n – 1) habis dibagi 80. Jika S(n) benar untuk n = k maka (34k -1) habis dibagi 80. Untuk n = k+1 maka….
34(k+1) – 1 = 34k+1 - 1
34(k+1) – 1 = 34k+1 + 1
34(k+1) – 1 = 80.34k+1 + 1
34(k+1) – 1 = 80.34k + 34k - 1
34(k+1) – 1 = 80.34k-1
5.
MULTIPLE CHOICE QUESTION
3 mins • 4 pts
Himpunan penyelesaian system pertidaksamaan 5x + y ≥ 10, 2x + y ≤ 8 dan y ≥ 2 ditunjukkan oleh daerah…
I
II
III
IV
V
6.
MULTIPLE CHOICE QUESTION
3 mins • 4 pts
Untuk membuat barang tipe A diperlukan 4 jam kerja mesin I dan 2 jam kerja mesin II, sedangkan untuk barang tipe B diperlukan 5 jam kerja mesin I dan 3 jam kerja mesin II. Setiap hari kedua mesin tersebut bekerja tidak lebih dari 15 jam. Jika setiap hari dapat dihasilkan x barang tipe A dan y tipe barang B, model matematika yang tepat adalah….
4x + 2y ≤ 15, 5x + 3y ≤ 15, x ≥ 0, y ≥ 0
4x + 5y ≤ 15, 2x + 3y ≤ 15, x ≥ 0, y ≥ 0
3x + 2y ≤ 15, 5x + 3y ≤ 15, x ≥ 0, y ≥ 0
4x + 2y ≤ 15, 3x + 3y ≤ 15, x ≥ 0, y ≥ 0
3x + 2y ≤ 15, 5x + 2y ≤ 15, x ≥ 0, y ≥ 0
7.
MULTIPLE CHOICE QUESTION
3 mins • 4 pts
Harga per bungkus lilin A Rp. 2.000, 00 dan lilin B Rp. 1.000,00. Jika pedagang hanya mempunyai modal Rp. 800.000, 00 dan kiosnya hanya mampu menampung 500 bungkus lilin, maka model matematika dari permasalahan di atas adalah .....
x + y ≤ 500, 2x + y ≤ 800, x ≥ 0, y ≥ 0
x + y ≤ 500,2x + y ≥ 800, x ≥ 0, y ≥ 0
x + y ≤ 500, 2x + y ≤ 800, x ≤ 0, y ≤ 0
x + y ≥ 500, 2x + y ≤ 800, x ≥ 0, y ≥0
x + y ≥ 500, 2x + y ≥ 800, x ≥ 0, y ≥ 0
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