Kvadrat funksiyaning xo ni toping y=2x2-8x+5 a b c -2 d -4 3

Variant 1
1. Quyida ko’rsatilgan funksiyalardan qaysilari kvadrat funksiya bo’ladi?
A) y=2x²+x+3 B) y=2x²+3x³+1 C) y=2x+1 D) y=x³+
2. Kvadrat funksiyaning x_o ni toping. y=2x²-8x+5
A) 4 B) 2 C) -2 D) -4
3. y=x²-4x+3 funksiyaning nollarini toping.
A) x₁=4 x₂=3 B) x₁=1 x₂=3 C) x₁=-1 x₂=-3 D) x₁=2 x₂=3
4. y=x²+5 parabola grafigi O_y o’qini qaysi nuqtada kesib o’tadi?
A) Kesib o’tmaydi B) y=5 C) y=-5 D) y=0
5. x²+1≥0 tengsizlikni yeching.
A) (1; ∞) B) (-∞; -1) (-1; ∞) C) (-∞; ∞) D)
6. (x-2)(x-4) tengsizlikni yeching.
A) (-∞; 2) (2; ∞) B) (2; 4) C) (-∞; 2) (4; ∞) D) (4; ∞)
7. x²-3x+2≤0 tengsizlikni yeching.
A) (-∞; 1) (2; ∞) B) (-∞; 1] [2; ∞) C) (1; 2) D) [1; 2]
8. Tengsizlikni yeching: x²+3x<0
A) (-∞; -3) (0; ∞) B) (-3; 0) C) (0; -3) D) (-3; ∞)
9. Tenglamani yeching: ≤0
A) [-1; 1] B) [-1; 1) C) (-∞; -1] [1; ∞) D) (-∞; -1) (1; ∞)
10. y= funksiyaning aniqlanish sohasini toping.
A) (-∞; -1) C) (-∞; -1) (-1; ∞)
B) (0; 1) D) (-1; 1)
11. y=x²+1 funksiyaga tegishli nuqtani toping.
A) (1; 0) C) (1; -1)
B) (0; 1) D) (2; 4)
12. Kvadrat funksiya berilgan javobni belgilang.
A) y=x+1 C) y=x²+1
B) y=x³+1 D) y=1
13. Juft funksiyani belgilang.
A) y=x² C) y=x²-x
B) y=x³ D) y=x
14. Toq funksiyani belgilang.
A) y=x² C) y=x²+x
B) y=x³ D) y= x³+x²
15. Juft funksiyani toping.
A) y=ax²+3 C) y=x³+x
B) y=x⁴+x² D) y=x³-x