May 2019 1 60 Report
Saluuut , j aimerais bien que qlq m aides dans ces exercices et mrc
1/ soit t de IR tel que t>1 montrer que 3/2<(1+2t)/(1+t)<2

2/ soit x et y de IR tel que 1≤ x ≤3 et 1 ≤ y ≤3 montrer que 1≤ 2xy/(x+y)≤ 3
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