Hisoblang.
1 B) 0,5 C) D) E)
Agar p>q>k>0 bo’lsa,
ni soddalashtiring.
2p B) 2p+2q-2k C) 2p=2q=2k D) 2p=2k E) 2q-2k
Tenglamaning nechta yechimi bor?
|x+1|=|2x-1|
4 B) 3 C) 2 D) 1 E)
Tenglamaning ildizlari yig’indisini toping.
|x+3|+|x-1|+|x-4|=6
B) 0 C) -4 D) 1 E) -2
Tenglamaning ildizlari yig’indisini toping.
|x+4|+|x-2|+|x-3|=7
2 B) C) 0 D) -2 E) 1
Tenglamaning nechta yechimi bor?
0 B) 1 C) 2 D) 3 E) 4
Tengsizlikni yeching.
B) C) D) E)
tengsizlikning butun sonlardan iborat yechimlari yig’indisini toping.
6 B) 7 C) 9 D) 12 E) 16
a ning qanday qiymatlarida
sistema yagona yechimga ega ?
a=0 B) a>0 C) a=2 D) a= E) a=4
Tenglama ildizlari ko’paytmasini toping.
-3 B) 3 C) 4 D) -4 E) -6
Tenglamani yeching.
B) C) D) E)
Tenglamani yeching.
49, -49 B) 7 C) 39 D) 50 E) 24
Agar
bo’lsa, ning qiymatini hisoblang.
B) C) 3 D) E)
Tenglamani yeching
56 B) 48 C) 60 D) 54 E) 64
Tengsizlikni yeching.
B) C) D)
Tengsizlikni qanoatlantiruvchi butun sonlar nechta?
5 B) 3 C) 4 D) 2 E) 1
Tengsizlikni yeching.
B) C) D) E)
Agar va ekani ma’lum bo’lsa, arifmetik progressiyaning dastlabki uchta hadini toping.
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Yig’indisi 16 ga, ikkinchi hadi ga teng bo’lgan maxrajli cheksiz geometrik progressiyaning 3-hadini toping.
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tenglamaning ildizlari arifmetik progressiyani tashkil etadi. ni toping.
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Agar ekanligi ma’lum bo’lsa, arifmetik progressiya dastlabki 19 ta hadining yig’indisini toping.
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Tenglamani yeching:
bu yerda - musbat butun son.
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Yettiga bo’linadigan barcha uch xonali sonlarning yig’indisini toping.
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Yig’indini toping:
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1- , 2- va oxirgi hadi, mos ravishda, 3, 12 va 3072 ga teng bo’lgan chekli geometrik progressiyaning hadlari sonini toping.
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3 ga qoldiqsiz bo’linadigan barcha musbat juft ikki xonali sonlarning yig’indisini toping.
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Sayyoh tog’ga ko’tarilayotib, 1-soatda 800 m balandlikka chiqdi, keying har bir soatda esa oldingisiga nisbatan 25 m kam balandlikka ko’tarildi. U 5700 m balandlikka necha soatda ko’tarilgan?
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Arifmetik progressiya 3- va 9- hadlarining yig’indisi 8 ga teng. Shu progressiyaning dastlabki 11 ta hadining yigindisini toping.
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Hisoblang:
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Biror arifmetik progressiyaga bo’ladigan va hadlar kirishi ma’lum. Bu progressiyaning nolga teng hadi bormi? Agar bor bo’lsa, u progressiyaning nechanchi nomerli hadi bo’ladi?
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