Toán tính A=1+1/2(1+2)+1/3(1+2+3)+1/4(1+2+3+4)+…+1/16(1+2+3+…+16) 22/10/2021 By Ximena tính A=1+1/2(1+2)+1/3(1+2+3)+1/4(1+2+3+4)+…+1/16(1+2+3+…+16)
A=1+1/2(1+2)+1/3(1+2+3)+1/4(1+2+3+4)+…+1/16(1+2+3+…+16) ⇒A=1+1/2.3+1/3.6+….+1/16.136 ⇒A=1+1,5+2+…+8,5 ⇒A=(8,5+1).[(8,5-1):0,5+1]/2 ⇒A=76 #NOCOPY Trả lời
A=1+1/2(1+2)+1/3(1+2+3)+1/4(1+2+3+4)+…+1/16(1+2+3+…+16)
⇒A=1+1/2.3+1/3.6+….+1/16.136
⇒A=1+1,5+2+…+8,5
⇒A=(8,5+1).[(8,5-1):0,5+1]/2
⇒A=76
#NOCOPY