logarytm
bacha: oblicz x
A) log x= 2 log 5 + log 4
B) log x= log 80 − 3log2
14 sty 17:44
5-latek: a)logx=2 to x wylicz zdefinicji
14 sty 17:48
Janek191:
a) log x = 2 log 5 + log 4 = log 52 + log 4 = log (25*4) = log 100 = 2 ,bo 102 = 100
14 sty 18:12
Janek191:
| | 80 | |
b) log x = log 80 − 3 log 2 = log 80 − log 23 = log 80 − log 8 = log |
| = log 10 |
| | 8 | |
to x = ?
14 sty 18:15