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Partea întreagă și partea fracționară a unui număr real

Authored by CAROLINA BÎRZĂIANU

Mathematics

9th Grade

Used 5+ times

Partea întreagă și partea fracționară a unui număr real
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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Partea întreagă a numărului −π-\pi este

-3

3

0,14

-4

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

{3}=\left\{\sqrt[]{3}\right\}=

1

3−1\sqrt[]{3}-1

0,73

3\sqrt[]{3}

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

[2+3 3]=\left[2+3\ \sqrt[]{3}\right]=

4

5

6

7

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

[1]+[2]+[3]+…[10]=\left[\sqrt[]{1}\right]+\left[\sqrt[]{2}\right]+\left[\sqrt[]{3}\right]+\dots\left[\sqrt[]{10}\right]=

10

20

19

55

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Dacă n este număr natural, atunci [n2+2n]=\left[\sqrt[]{n^2+2n}\right]=

n

n+1

n-1

n2+2nn^2+2n

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Soluția inecuației [x]>5 \left[x\right]>5\ este

x∈[5,∞)x\in\left[5,\infty\right)

x∈(5, ∞)x\in\left(5,\ \infty\right)

x∈[6, ∞)x\in\left[6,\ \infty\right)

x∈(6,∞)x\in\left(6,\infty\right)

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Soluția ecuației [x]+[x+12]=3\left[x\right]+\left[x+\frac{1}{2}\right]=3 este

x=1x=1

x∈(3, 4)x\in\left(3,\ 4\right)

x∈[32,2)x\in\left[\frac{3}{2},2\right)

x=2x=2

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