MATEMATIKA WAJIB MID SEMESTER GANJIL 2020 KELAS 11

Quiz
•
Mathematics
•
11th Grade
•
Hard

SMA 1
Used 43+ times
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18 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
deduktif
induktif
deduktif dan induktif
deret arimetika
deret geometri
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
n2 dan k
n2 dan k2
n2 dan k2+1
n2+1 dan k2 +1
n2+1 dan k2
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diberikan Sn = 1 + 5 + 9 + … + [4(k – 1) – 3] + (4k – 3) . Pernyataan untuk n = k+ 1 yang benar adalah … .
1+5+9+…+(4k – 3)+(4k + 1)
1+5+9+…+(4k – 2)+(4k + 1)
1+5+9+…+(4k – 1)+(4k + 1)
1+5+9+…+(4k – 3)+(4k – 2)
1+5+9+…+(4k – 3)+(4k – 1)
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diberikan pernyataan :
(i) Pembuktian terhadap berlakunya pernyataan untuk bilangan asli terkecil n=1.
(ii) Pembuktian berlaku untuk n=k.+1
(iii) Pembuktian berlakunya untuk n =k.
Secara sistematis , prosedur (algoritma) pembuktian dengan induksi matematika mempunyai urutan sebagai berikut:
(i),(ii) dan (iii)
(i),(iii) dan (ii)
(ii),(i) dan (iii)
(ii),(iii) dan (ii)
(iii),(i) dan (ii)
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Akan dibuktikan dengan induksi matematika bahwa 6+10+14+ … + (an + b)=2n2 + 4n adalah benar, maka nilai a dan b berturut-turut adalah …
6 dan 4
4 dan 6
4 dan 2
2 dan 4
4 dan 1
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Dengan induksi matematika terbukti 3+5+7+…+ (2n+1) = n2 + pn berlaku untuk setiap bilangan asli n. Untuk n=1 diperoleh pernyataan benar, nilai p yang memenuhi adalah … .
– 1
– 2
0
1
2
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Akan dibuktikan 2 + 4 + 6 + … + 2n = n(1+n) bernilai benar untuk n = k+1.Hasil pembuktian terakhir yang menyatakan benar di ruas kiri sama dengan ruas kanan adalah … .
(1+k)(2k+2) = (k+1)(k+2)
k2 + 3k + 2 = k2 + 3k + 2
k2 + 2k + 1 = k2 + 2k + 1.
k(k+1)+k+1 = k3 +2k2 + k
k(1+k)+k+1 = k2 + 2k + 1
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