M=1+1/2.(1+2)+1/3.(1+2+3)+......+1/16.(1+2+3+....+16)
Những câu hỏi liên quan
M=1+1/2(1+2)+1/3(1+2+3)+...+1/16(1+2+3+...+16)
M=1+1/2(1+2)+1/3(1+2+3)+1/4(1+2+3+4)+...+1/16(1+2+3+...+16) = ?
tính
M=1+1/2*(1+2)+1/3*(1+2+3)+.....+1/16*(1+2+3+...+16)
thuc hien phep tinh :M=1+1/2(1+2)+1/3(1+2+3)+1/4(1+2+3+4)+...+1/16(1+2+3+...+16)
Thực hiện tính
M=1+1/2(1+2)+1/3(1+2+3)+1/4(1+2+3+4)+...+1/16(1+2+3+...+16)
Thực hiện tính:
M = 1 + 1/2. (1+ 2) + 1/3. (1 +2 + 3) + ... + 1/16. ( 1+ 2 +3 +... +16)
Thực hiện phép tính:
M=1+1/2(1+2)+1/3(1+2+3)+1/4(1+2+3+4)+...+1/16(1+2+3+...+16)
M= 1+\(\frac{1}{2}\left(1+2\right)+\frac{1}{3}\left(1+2+3\right)+.......+\frac{1}{16}\left(1+2+3+...+16\right)\)
Tính M
Tính:\(M=1+\frac{1}{2}\left(1+2\right)+\frac{1}{3}\left(1+2+3\right)+...+\frac{1}{16}\left(1+2+3+...+16\right)\)
A=1+1/2x3+1/3X6+1/4X10+...+1/16X136
A=1+3/2+2+5/2+3+...+17/2
A=2/2+3/2+4/2+5/2+6/2+...+17/2
A=2+3+4+5+...+16+17/2
A=(2+17)x16:2/2
A=19x16:2/2
A=304:2/2
A=152/2
A=76
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M = 1+3/2+6/2+.....+136/16
= 2/2+3/2+4/2+.....+17/2
= 2+3+....+17/2
= 152/2
= 76
Tk mk nha
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\(\text{M}=1+\frac{1}{2}\left(1+2\right)+\frac{1}{3}\left(1+2+3\right)+...+\frac{1}{16}\left(1+2+3+...+16\right)\)
Xét \(\text{M}=1+2+3+4+5+...+\text{n}=\frac{\left(\text{n}+1\right)\text{n}}{2}\)lấy \(\frac{\text{S}}{\text{n}}=\frac{\frac{\left(\text{n}+1\right)\text{n}}{2}}{\text{n}}=\frac{\text{n}+1}{2}\)
Ta có: \(\text{M}=1+\frac{\frac{2\left(2+1\right)}{2}}{2}+\frac{\frac{3\left(3+1\right)}{2}}{3}+\frac{\frac{4\left(4+1\right)}{2}}{4}+\frac{\frac{5\left(5+1\right)}{2}}{5}+...+\frac{\frac{16\left(16+1\right)}{2}}{16}\)
\(\text{M}=1+\frac{1+2}{2}+\frac{1+3}{2}+\frac{1+4}{2}+\frac{1+5}{2}+...+\frac{1+16}{2}\)
\(\text{M}=1+\frac{1+2+1+3+1+4+1+5+1+6+...+1+16}{2}\)
\(\text{M}=1+\frac{151}{2}\)
\(\text{M}=\frac{153}{2}\)
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