equazioni e disequazioni di grado superiore al secondo

equazioni e disequazioni di grado superiore al secondo

11th Grade

14 Qs

quiz-placeholder

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equazioni e disequazioni di grado superiore al secondo

equazioni e disequazioni di grado superiore al secondo

Assessment

Quiz

Mathematics

11th Grade

Practice Problem

Hard

Created by

Silvia Formaggia

Used 221+ times

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14 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 2x40-2x^4\le0  

 x0x\ge0  

 x0x\le0  

 xR\forall x\in R  

Impossibile

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 27x31027x^3-1\ge0 
ha soluzione

 x13x13x\le-\frac{1}{3}\vee x\ge\frac{1}{3}  

 x>13x>\frac{1}{3}  

 x13x\ge\frac{1}{3}  

 x13x\ge-\frac{1}{3}  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

x3+80x^3+8\le0

x2x\le-2

2x2-2\le x\le2

x8 x+8x\le-\sqrt{8}\ \vee\ x\ge+\sqrt{8}

Impossibile

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 3x42x3x203x^4-2x^3-x^2\le0 

 x13  0x1x\le-\frac{1}{3}\ \vee\ 0\le x\le1  

 13x1-\frac{1}{3}\le x\le1  

 x13x1x\le-\frac{1}{3}\vee x\ge1  

Impossibile

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 x481<0x^4-81<0 

 x<3x<3 

 3<x<3-3<x<3 

  xR\forall\ x\in R 

Impossibile

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Quali delle seguenti equazioni è impossibile?

3x6=3-3x^6=-3

8x3+1=08x^3+1=0

25x10+5=025x^{10}+5=0

x7+1=0x^7+1=0

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

L'equazione  x2007+1=0x^{2007}+1=0  

non ha soluzioni reali

ha esattamente 2007 soluzioni reali

ha una sola soluzione reale

ha esattamente 2008 soluzioni reali

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