EKSPONENCIJALNE i LOGARITAMSKE FUNKCIJE
PDF- ogledni primjerci - MIM-Sraga
PDF- ogledni primjerci - MIM-Sraga
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LOGARITMI kompletna rješenja<br />
www.mim-sraga.com<br />
5.<br />
1) 3<br />
log 5<br />
3<br />
= → =<br />
loga x<br />
x po pravilu a x<br />
log2<br />
7<br />
2) 2 7<br />
=<br />
log 5<br />
2<br />
1 1<br />
1<br />
⎞<br />
log2 5<br />
−<br />
−1log 2 5 log 2 5 log2 5<br />
1<br />
−1<br />
( )<br />
⎛<br />
3) ⎜ ⎟ = 2 = 2 = 2 = 2 =<br />
⎝2⎠<br />
5<br />
1<br />
log<br />
1<br />
2<br />
1<br />
9 3<br />
2 6 log<br />
2 3 6<br />
3<br />
2<br />
log 6 log 6<br />
4) 3 3 3 3 6 6<br />
= = = = =<br />
2<br />
log25 2 log25 log25 2<br />
5) 4 2 2 5 25<br />
= = = =<br />
2<br />
log5 2 2 log5 2 log5<br />
2 2<br />
6) 25 5 5 2 4<br />
= = = =<br />
1<br />
log<br />
1<br />
2<br />
1<br />
9 3<br />
2 25 log<br />
2 3 25<br />
3<br />
2<br />
log 25 log 25<br />
7) 3 = 3 = 3 = 3 = 25 = 25 = 5<br />
log 5<br />
4<br />
1⎞<br />
−1<br />
1 log45 log45<br />
−1<br />
1<br />
−<br />
( )<br />
⎛<br />
8) ⎜ ⎟ = 4 = 4 = 5 =<br />
⎝4⎠<br />
5<br />
Pravila za LOGARITMIRANJE<br />
15<br />
Autor zadataka: Mladen Sraga