\(1.3.5.7.....59=\frac{1.2.3.4.....60}{2.4.6.....60}=\frac{\left(1.2.3.....30\right).\left(31.32.....60\right)}{\left(1.2\right).\left(2.2\right).\left(3.2\right).....\left(30.2\right)}\)
\(=\frac{\left(1.2.3.....30\right).\left(31.32.....60\right)}{\left(1.2.3.....30\right).\left(2.2.....2\right)}=\frac{31}{2}.\frac{32}{2}.....\frac{60}{2}\)
chứng tỏ rằng:
31/2*32/2*33/2*...*60/2=1.3.5.7....59
So sánh \(P=\frac{31}{2}.\frac{32}{2}.\frac{33}{2}...\frac{60}{2}\) và Q=1.3.5.7........59
A = \(\frac{31}{2}.\frac{32}{2}.\frac{33}{2}.....\frac{60}{2}\) va B = 1.3.5.7........59
CMR: 31/2*32/2*33/2*...*60/2=1*3*5*...*59
so sánh \(P=\frac{31}{2}.\frac{32}{2}.\frac{33}{2}...\frac{60}{2}\) và \(Q=1.3.5.7...59\)
chứng tỏ rằng
31/2+32/2+33/2+....+60/2=1.3.5....59
so sánh: P=31/2.32/2.33/2.....60/2 với Q=1.3.5.7....59
chứng minh 31/2 X 32/2 X 33/2 ...60/2 = 1 X 3 X 5 ...X 59
Chứng tỏ : 31/2 x 32/2 x 33/2 x .... x 60/2 = 1 x 3 x 5 x ... x 59
