| 1 | ||
Oblicz x, jeżeli logx = log3 − 2log2 + | log5 | |
| 2 |
| 1 | 3 | |||
logx = log3 − 2log2 + | log5 = log3 − log4 + log√5 = log3 − log4 √5 = log | √5 = | ||
| 2 | 4 |
| 5 | ||
log3√ | ||
| 20 |
| 5 | ||
x = 3√ | ||
| 20 |
| b | ||
n*logab= logabn logab−logac= loga | logab+logac= loga(b*c) | |
| c |
| 3 | ||
logx= log | +log√5 | |
| 4 |
| 3 | ||
logx= log | *√5 | |
| 4 |
| 3 | ||
x= | √5 | |
| 4 |