9-sinf I-blok 2-variant 2017-2018 o’quv yili IV-chorak
Matematika
1.Parabolaning tarmoqlari qachon yuqoriga yo’nalgan bo’ladi?
A) a≥0 B) a≤0 C) a˃0 D) a˂0
2.Sonning arifmetik kvadrat ildizini toping. 225
A) 11 B) 13 C) 15 D) 10
3.Tenglamani yeching: x3= 49*7
A) x=7 B) x=3 C) x=2 D) x=-2
4. radian necha gradusga teng?
A) 1600 B) 4200 C) 3240 D) 2400
5.720ning radian o'lchovini toping
A) B) C) D) E)
6. cos( +α)nimagateng?
A) sinα B) cosα C) -cosα D) -sinα
7.Ketma-ketlik a=n2 -2n+6 formula bilanberilgan. Ketma-ketlikning 5-hadini toping. n€N
A) -3 B) 2 C) 9 D) 21
8.Agar a8 =128, a10 =140 bo'lsa, a9 =?
A) 136 B) 134 C) 131 D) 141
Do'stlaringiz bilan baham: |