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Racionalieji reiškiniai su vienu kintamuoju KD

Authored by Edita Balinskiene

Mathematics

10th Grade

Used 6+ times

Racionalieji reiškiniai su vienu kintamuoju KD
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16 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Suprastinkite:  x3xx3+x2\frac{x^3-x}{x^3+x^2}  

 x+1x2\frac{x+1}{x^2}  

 x2+xx\frac{x^2+x}{x}  

-1

 x1x\frac{x-1}{x}  

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Apskaičiuokite :  5mm15mm2m\frac{5m}{m-1}-\frac{5m}{m^2-m}  

 55  

 5m2\frac{5}{m^2}  

 1m\frac{1}{m}  

 1m1\frac{1}{m-1}  

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Apskaičiuokite:  3a3a21×a1a\frac{3a^3}{a^2-1}\times\frac{a-1}{a}  

 3a4(a2+1)(a2)\frac{3a^4}{\left(a^2+1\right)\left(a-2\right)}  

 a1a(a2+1)\frac{a-1}{a\left(a^2+1\right)}  

 a1a+1\frac{a-1}{a+1}  

 3a2a+1\frac{3a^2}{a+1}  

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 x+1x24\frac{x+1}{x^2-4}   Su kokiomis x reikšmėmis trupmena turi prasmę

 x(;2)(2;)x\in\left(-\infty;2\right)\cup\left(2;\infty\right)  

 x(;2)(2;2)(2;)x\in\left(-\infty;-2\right)\cup\left(-2;2\right)\cup\left(2;\infty\right)  

 x(;2)(2;)x\in\left(-\infty;-2\right)\cup\left(-2;\infty\right)  

 x(;1)(1;)x\in\left(-\infty;-1\right)\cup\left(-1;\infty\right)  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Trupmena 4xx+4\frac{4-x}{x+4}  neturi prasmės, kai

 x=0x=0  

 x=4x=4  

 x=4x=-4  

 x(;4), (4, +)x\in\left(-\infty;-4\right),\ \left(-4,\ +\infty\right)  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Suprastinkite  15x220x4\frac{15x^2}{20x^4}  

 3x24\frac{3x^2}{4}  

 1520\frac{15}{20}  

 34x2\frac{3}{4x^2}  

 34x\frac{3}{4x}  

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Suprastinkite  x28x4x\frac{x^2-8x}{4x}  

 x22x\frac{x^2-2}{x}  

 x84x\frac{x-8}{4x}  

 x84\frac{x-8}{4}  

 x22x^2-2  

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