Module 2: Eléments d'algèbre.
Cours : Module 2: Eléments d'algèbre.. Recherche parmi 300 000+ dissertationsPar ollie • 19 Avril 2016 • Cours • 520 Mots (3 Pages) • 627 Vues
Module 2: Éléments d’algèbre; Travail noté 2
Question 1 :
PV=FV (1+ IN)-1
PV= 16250 (1+0.12 x 2.5)-1
PV= 16250 (1+0.3)-1
PV= 16250 . 1
1.3
PV= 12500 $
Question 2 :
5x 1 6 + 4x2 – x3
a) un terme = 4x2
b) un facteur = 5 x 61+4x2-x3
c) un indice = 2
d) un exposant= 6
e) le coefficient de x3 = -1
Question 3 :
- P1+ P2
= (12x2-6xy+9y2) + (-2x2+3xy-4y2)
= 10x2-3xy+5y2
- P3-P2
= (2x-y2)-(-2x2 + 3xy-4y2)
= 2x-y2+2x2-3xy+4y2
=2x+2x2-3xy+3y2
c) P2 x P3
= (-2x2+3xy-4y2) x (2x-y2)
= -4x3+2x2y2+6x2y-3xy3-8xy2+4y4
- P1 ÷ M1
= 12x2-6xy+9y2 ÷ -3xy
=12x2 +- 6xy +9y2
-3xy -3xy -3xy
= -4x +2 -3yY x
Question 4:
a) x2-x-30
= 5× -6 = -30
-6 +5 = -1
= (x-6) (x+5)
b) 4a2 -20 ab2+25b4
= (2a-5b2) (2a-5b2)
- x4- 81
= (x2)2 - 81
= (x2-9) (x2 + 9)
- 6Nxy+8Nx-15Ny-20N
= 2Nx (3y+4)-5N (3Y+4)
= (3y+4) (2Nx-5N)
Question 5 :
VF= 2000 (1+ 9 x 1 + 6 x 2 +8 x 3 )
100 12 100 12 100 12
VF= 2000 (1+ 0.0075 + 0.01 + 0.02)
VF= 2000 (1+ 0.0375)
VF= 2000 x 1.00375
VF= 2075 $
Question 6 :
2-3 a2/3 b4
2-2 a1/6b4
= -1a1/3
Question 7 :
- (x-1(x -y)3 4√y3 ) -2
- (x-4y√( x - y ))
- (x4(x -y)3 4√y3 ) -2
- (x1y√( x - y ))
- (x3(x -y)3 (y3)1/4 ) -2
- y( x - y ) 1/2
- (x3(x -y)3-1/2 (y3)1/4 ) -2
y
- x-6(x -y)-5 (y3)-1/2
y-2
Y2
...