logarytmy
renia: WIEDZAC ZE
a) log54=a i log53=b oblicz log2512
b) log142=a i log145=b oblicz log750
11 wrz 17:23
pigor: ..., np. tak : log
142=a i log{14}5= b, to
| | log1450 | | log142*52 | |
b) log750= |
| = |
| = |
| | log147 | | | |
| | log142+2log145 | | a+2b | |
= |
| = |
| , gdzie a≠1. ...  |
| | log1414−log142 | | 1−a | |
11 wrz 17:32