Trac Nghiem Do Thi Hs

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Caâu 1: Ñoà thò sau ñaây laø ñoà thò haøm soá naøo: A/ y = -x3 + 3x2 + 1 y 2 B/ y = x2(x – 3) +1 1 2 C/ y = x4 – 2x2 + 1 1 D/ y = x4 + 2x2 + 1 0

Caâu 6: Ñoà thò sau ñaây laø ñoà thò haøm soá naøo:

x 5

-1

-2 -3

0

x +1 x −1 x2 − x + 1 B/ y = x −1 3 C/ y = x + x −1 2 x −x+2 D/ y = x −1 A/ y =

x

1

Caâu 3: Ñoà thò sau ñaây laø ñoà thò haøm soá naøo:

x4 x2 + 4 2 x2 B/ y = 4

y 4

2

x 0

-1

1

5

-2

Caâu 7: Ñoà thò sau ñaây laø ñoà thò haøm soá naøo:

Caâu 2: Ñoà thò sau ñaây laø ñoà thò haøm soá naøo: A/ y = -x3 + 3x2 + 1 2 y B/ y = x3 – 3x2 +1 1 C/ y = (x + 1)2 (x – 1)2 4 2 D/ y = x + 2x + 1 -1

x2 x −1 4 B/ y = x −1 4 C/ y = 1− x 4x D/ x = 1− x A/ y =

A/ y =

y 4 3

2 1

x 0

2

1

-1

5

-2

Caâu 8: Ñoà thò sau ñaây laø ñoà thò haøm soá naøo: 2

C/ y = x4 + x2 D/y = x4 – x2.

y

3/4

x 0

-1

Caâu 4: Ñoà thò sau ñaây laø ñoà thò haøm soá naøo: A/ y = x3 – 2x2 + 1 y 2 B/ y = x3 – 1 C/ y = x3 + 3x2 + 3x 1 D/ y = x3 – 3x2 + 3x – 1 0 -1

1

1 x −1 1 B/ y = − x + 1− x 2 C/ y = − x + x −1 2 D/ y = − x + 1− x

y

A/ y = − x +

1

x 2

-2

2 1

0 -1

2

-1

-2

Caâu 9: Ñaây laø ñoà thò haøm soá y = ax3+ bx2 + cx + d y trong ñoù: 6 A/ a > 0, b > 0, d = 1 5 B/ a < 0, b < 0, c = 0 4 C/ a < 0, b < 0, d = 1 D/ a < 0, b > 0, c = 0 2 1

Caâu 5: Ñoà thò sau ñaây laø ñoà thò haøm soá naøo:

2x − 3 x −1 2x −1 B/ y = x −1 2x + 3 C/ y = x −1 2x +1 D/ y = x −1

A/ y =

y

2

x -1/2 0 -1

1

-2

D:\HXH\Chuyen mon\Khoi 12\1. Khảo sát hàm số.doc

x

0

4

x

2

Caâu 10: Ñaây laø ñoà thò haøm soá y = ax4 + bx2 + c A/ a > 0, b > 0, c = 2 y B/ a > 0, b < 0, c = 2 2 C/ a < 0, b < 0, c = 2 D/ a < 0, b > 0, c = 2 1 x

5 -1

0

1

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