na szybko !!
jaskolka: log9(15)−log9(20/3)+2log10(6)=
8 paź 00:08
ania:
| | 15 | | 15*3 | | 9 | |
log9( |
| ) + log10 36 = log9( |
| ) + log10 36 = log9( |
| ) + |
| | 20/3 | | 20 | | 4 | |
log
10 36 =
=log
9 9 − log
9 4 + log
10 (9*4) = 1 − log
9 4 + log
10 9 + log
10 4 =
| | log10 4 | |
= 1 − |
| + log10 9 + log10 4 |
| | log10 9 | |
8 paź 11:07