log1=0 |
0番 |
|
100=1 |
log1.25=0.1 |
⑤番 |
2.5/2___(log2.5-log2=0.4-0.3=0.1 |
100.1=1.25 |
log2=0.3 |
①番 |
210=1024=約1000___log1000=3___3/10=0.3 |
100.3=2 |
log2.5=0.4 |
④番 |
5/2__log5-log2=0.7-0.3=0.4 |
100.4=2.5 |
log3=0.475 |
④番 |
32=9___log9/2=0.95/2=0.475 |
100.475=3 |
log4=0.6 |
②番 |
22=4__2xlog2=2x0.3=0.6 |
100.6=4 |
log5=0.7 |
③番 |
5=10/2___log10-log2=1-0.3=0.7 |
100.7=5 |
log6=0.775 |
⑤番 |
6=2x3___log2+log3=0.3+0.475=0.775 |
100.775=6 |
log7=0.85 |
④番 |
72=49=約50=5x10___(log5+log10)/2=1.7/2 |
100.85=7 |
log8=0.9 |
②番 |
23=8___3xlog2=03x0.3=0.9 |
100.9=8 |
log9=0.95 |
③番 |
92=81=約80=8x10__(log8+log10)/2=(0.9+1)/2 |
100.95=9 |
log10=1 |
0番 |
|
101=10 |
log100=2 |
0番 |
|
102=100 |
log1000=3 |
0番 |
|
103=1000 |