wiedzac, ze log_2 20=a i log_2 36=b oblicz log9
xxann: log2 30= a
log2 36=b
oblicz log10 9
wiem, ze log10 9 = 2log2 3 / log2 10 ale nie wiem co dalej zrobic
18 lut 16:36
Janek191:
log
2 30 = log
2 (3*10) = log
2 3 + log
2 10 = a ⇒ log
2 10 = a − log
2 3
| b − 2 | |
log2 36 = log 2( 9*4) = log2 9 + log2 4 = 2 log2 3 + 2 = b ⇒ log23 = |
| |
| 2 | |
zatem
| 2 log2 3 | | b − 2 | | b − 2 | |
log10 9 = |
| = |
| = |
| |
| log2 10 | | a − log2 3 | | a − 0,5 b + 1 | |
18 lut 16:49