Toán Lớp 6: Bài 3 Chứng minh rằng
A = 21/11+19/30+11/36<3
Ai làm nhanh giúp mình vs ạ
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Toán Lớp 6: Bài 3 Chứng minh rằng
A = 21/11+19/30+11/36<3
Ai làm nhanh giúp mình vs ạ
Comments ( 2 )
=>A = 21/11 + 21/11 + 21/11 > 21/11 + 19/30 + 11/36
=>\frac{21}{11.3} < 3
Nên 3 > \frac{21}{11.3} > 21/11 + 19/30 + 11/36
=> 21/11 + 19/30 + 11/36 < 3