ex1.py

Created by hicham-choukour

Created on November 21, 2023

1.01 KB


QCM
1.
Lequation 3x2 + 7x + 4 = 0
a. admet 2 solutions négatives.
b. admet 1 solution positive.
c. nadmet aucune solution réelle
d. admet une solution positive, 
une solution négative

Réponse => a

2.
Quelle est une équation
possible de la courbe ci-contre?
a. y = x2 + 2x - 8
b. y = - 3x2 - 4x - 1
c. y = 5x2 - 8x + 4
d. y = - 2x2 + x + 3

Réponse => c

3.
-x2-3x+1 a pour discriminant :
a.-1 b.5 c.13 d.-13

Réponse => c


4. 
Léquation 2, 5x2-5x+2=0 a pour
solutions :
      
a. 5+sqrt(5)/5 et 5-sqrt(5)/5
 
b. -5+sqrt(5)/5 et -5-sqrt(5)/5

c. sqrt(5) et -sqrt(5)

d. autres

Réponse => a

5.
La forme factorisée de 
2x2+6x-8 est :
  
a. 2x(x+3)-8
b. 2(x+3/2)2-12.5
c. 2(x+4)(x-1)
d. (x-4)(x+1)

Réponse => c


6.
Soit f(x)= 5x2+9x+4 sur R.
a. f(x)> 0 pour tout x réel.
b. f(x)< 0 pour tout x réel.
c. f(x)nest pas de signe constant.
d. f(x)< 0 sur ]-infini ; 0].

Réponse => c

7.
Linéquation 3x2-6x-24<= 0 
a pour ensemble de solutions :
a. [- 2 ; 4]
b. [- 1 ; 3] 
c. [0 ; 5] 
d. autre

Réponse => a

During your visit to our site, NumWorks needs to install "cookies" or use other technologies to collect data about you in order to:

With the exception of Cookies essential to the operation of the site, NumWorks leaves you the choice: you can accept Cookies for audience measurement by clicking on the "Accept and continue" button, or refuse these Cookies by clicking on the "Continue without accepting" button or by continuing your browsing. You can update your choice at any time by clicking on the link "Manage my cookies" at the bottom of the page. For more information, please consult our cookies policy.