Quiz about ULANGAN MATEMATIKA FUNGSI

Question 1

Jika diketahui himpunan pasangan berurutan dari suatu relasi adalah (2,3), (1,4), (2,5), (3,5). Daerah hasil dari relasi tersebut adalah...

Accepted Answer

{3, 4, 5}

Answer

{1, 2, 3}

Answer

{1, 2, 3, 4, 5}

Answer

Himpunan bilangan asli

Question 2

Ditentukan f(x) = 1 - 3x dengan daerah asal {-3, -2, -1, 0, 1, 2, 3}. Daerah hasil fungsi tersebut adalah...

Accepted Answer

{-8, -5, -2, 1, 4, 7, 10}

Answer

{-3, -2, -1, 0, 1, 2, 3}

Answer

{-2, 3, 5, 7, 9, 11, 12}

Answer

{1, 2, 4, 5, 7, 8, 10}

Question 3

Grafik fungsi linear f(x) = 3x - 6, x $$\in$$ R adalah...

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 4

Berikut ini yang merupakan fungsi linear adalah...

Accepted Answer

f(x) = 2x - 1

Answer

$$f\left(x\right)=\frac{1}{x}$$

Answer

$$f\left(x\right)=x^2+2$$

Answer

$$f\left(x\right)=\log\ x$$

Question 5

Jika f(x) = x + 7 maka f(4) =...

Accepted Answer

11

Answer

9

Answer

10

Answer

12

Question 6

Suatu fungsi linear f(x) = 2x -4 dengan daerah asal $$D_f=\left\{-3\le x\le5\right\}$$ maka daerah hasilnya adalah $$R_f=...$$

Accepted Answer

$$\left\{-10\le y\le6\right\}$$

Answer

$$\left\{-6\le y\le3\right\}$$

Answer

$$\left\{5\le y\le10\right\}$$

Answer

$$\left\{2\le y\le8\right\}$$

Question 7

Titik puncak dari fungsi kuadrat $$f\left(x\right)=x^2-6x+8$$ adalah...

Accepted Answer

(3, -1)

Answer

(-3, 1)

Answer

(4, 2)

Answer

(6, 8)

Question 8

Grafik fungsi kuadrat $$f\left(x\right)=x^2+8x+15$$ adalah...

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 9

Range dari fungsi kuadrat $$f\left(x\right)=x^2-2x-3$$ untuk -2 < x < 5 adalah...

Accepted Answer

-4 < x < 12

Answer

-12 < x < 5

Answer

5 < x < 12

Answer

4 < x < 12

Question 10

Fungsi kuadrat $$f\left(x\right)=x^2+6x+5$$ memiliki sumbu simetri...

Accepted Answer

x = -3

Answer

x = 3

Answer

y = 3

Answer

y = -3

Question 11

Diketahui $$f\left(x\right)=x+2$$ dan $$g\left(x\right)=x^2-4$$ maka $$\left(f+g\right)\left(x\right)=...$$

Accepted Answer

$$x^2+x-2$$

Answer

$$x^2+x-4$$

Answer

$$x^2+x-6$$

Answer

$$x^2-2x+1$$

Question 12

Diketahui $$f\left(x\right)=x-5$$ dan $$g\left(x\right)=x^2+x$$ maka $$\left(f.g\right)\left(x\right)=...$$

Accepted Answer

$$x^3-4x^2-5x$$

Answer

$$x^3-5x^2+4$$

Answer

$$2x^3-5x+4$$

Answer

$$2x^3-4x^2+5$$

Question 13

Dikatahui $$f\left(x\right)=x^2-4$$ dan $$g\left(x\right)=x+2$$ maka nilai $$\left(\frac{f}{g}\right)\left(x\right)=...$$

Accepted Answer

$$x-2$$

Answer

$$2x-1$$

Answer

$$x+2$$

Answer

$$x-1$$

Question 14

Domain dari $$f\left(x\right)=\sqrt[]{\frac{x+7}{3-x}}$$ adalah...

Accepted Answer

$$-7\le x<3$$

Answer

$$3\le x\le7$$

Answer

$$-3\le x\le7$$

Answer

$$-7\le x\le3$$

Question 15

Daerah asal dari fungsi $$f\left(x\right)=\frac{4}{x+1}$$ adalah...

Accepted Answer

$$D_f=\left\{x e-1\ dan\ x\in R ight\}$$

Answer

$$D_f=\left\{x e4\ dan\ x\in R ight\}$$

Answer

$$D_f=\left\{x e1\ dan\ x\in R ight\}$$

Answer

$$D_f=\left\{x e-4\ dan\ x\in R ight\}$$

Question 16

Daerah asal dari fungsi $$f\left(x\right)=\frac{x+2}{x^2-3x+2}$$ adalah...

Accepted Answer

$$D_f=\left\{x e1,\ x e2\ dan\ x\in R ight\}$$

Answer

$$D_f=\left\{x e-2,\ x e1\ dan\ x\in R ight\}$$

Answer

$$D_f=\left\{x e-2,\ x e-1\ dan\ x\in R ight\}$$

Answer

$$D_f=\left\{x e-1,\ x e2\ dan\ x\in R ight\}$$

Question 17

Daerah asal dari fungsi $$f\left(x\right)=\sqrt[]{2x-6}$$ adalah...

Accepted Answer

$$D_f=\left\{x\ge3\ dan\ x\in R\right\}$$

Answer

$$D_f=\left\{x\ge-3\ dan\ x\in R\right\}$$

Answer

$$D_f=\ \left\{x\ge6\ dan\ x\in R\right\}$$

Answer

$$D_f=\left\{x\ge2\ dan\ x\in R\right\}$$

Question 18

Daerah asal dari $$f\left(x\right)=\sqrt[]{x^2+5x-6}$$ adalah...

Accepted Answer

$$D_f=\left\{x\le-6\ atau\ x\ge1\ dan\ x\in R\right\}$$

Answer

$$D_f=\left\{x\le-1\ atau\ x\ge6\ dan\ x\in R\right\}$$

Answer

$$D_f=\left\{-6\le x\le1\ dan\ x\in R\right\}$$

Answer

$$D_f=\left\{-1\le x\le6\ dan\ x\in R\right\}$$

Question 19

Daerah asal dari fungsi $$f\left(x\right)=\frac{2x+3}{\sqrt[]{x+4}}$$ adalah...

Accepted Answer

$$D_f=\left\{x>-4,\ x\in R\right\}$$

Answer

$$D_f=\left\{x\ge4,\ x\in R\right\}$$

Answer

$$D_f=\left\{x\ge-4,\ x\in R\right\}$$

Answer

$$D_f=\left\{x e-4,\ x\in R ight\}$$

Question 20

Daerah asal dari $$f\left(x\right)=\sqrt[]{9-x^2}$$ adalah...

Accepted Answer

$$-3\le x\le3$$

Answer

$$-9\le x\le9$$

Answer

$$x\le-3\ atau\ x\ge3$$

Answer

$$x\le-9\ atau\ x\ge9$$

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