Bonjour
Pyramide multiplicative :
…………..| …A |
……….| .B …| ..C |
…….| D |… E | ….F |
.| 1/2 | 2/3 | 3/4 | 4/5 |
D = 1/2 x 2/3 = 1/3
E = 2/3 x 3/4 = 2/4 = 2/(2 x 2) = 1/2
F = 3/4 x 4/5 = 3/5
B = 1/3 x 1/2 = 1/6
C = 1/2 x 3/5 = 3/10
A = 1/6 x 3/10 = 3/(2 x 3 x 10) = 1/20
…………..| 1/20 |
……….| .1/6…| 3/10|
…….| 1/3 | 1/2 | 3/5 |
.| 1/2 | 2/3 | 3/4 | 4/5 |
…………..| …A |
……….| .B …| ..C |
…….| 5/3 |… D | 1/5 |
.| 1/2 | …E…..| 3/4 | F |
E x 1/2 = 5/3
E = 5/3 / (1/2) = 5/3 x 2 = 10/3
D = 10/3 x 3/4 = 10/4 = (2 x 5)/(2 x 2) = 5/2
3/4 x F = 1/5
F = 1/5 / (3/4) = 1/5 x 4/3 = 4/15
B = 5/3 x 5/2 = 25/6
C = 5/2 x 1/5 = 1/2
A = 25/6 x 1/2 = 25/12
…………..| 25/12 |
……….| .25/6 | 1/2 |
…….| 5/3 | 5/2 | 1/5 |
.| 1/2 | 10/3.| 3/4 | 4/15 |
