Réponses

2013-03-21T22:20:59+01:00
2013-03-21T22:25:36+01:00

a = 2/3 x 9/5 = 18/15 = 6/5

b = 4/4 x 9/5 = 36/20 = 18/10 = 9/5

h = 1/2[1/4 - (2/16 -1/16)]

= 1/2 (1/4 -1/16)

= 1/2 ( 4/16 -1/16)

= 1/2 ( 3/16)

= 1/2 x 3/16 = 3/32