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aangelikkkkk: oblicz
a)3 logspan style="font-family:times; margin-left:1px; margin-right:1px">12 8−log3 27
b) liczby x=2log3−log2 , y=log 4,5 rowne sa?
c)−log2 (sin300)2
d) liczby log3(log2 16+log2 32)jest rowne
22 mar 20:37
Beti:
d) = log3(log224 + log225) = log3(4log22 + 5log22) =
= log3(4 + 5) = log39 = 2
22 mar 20:46
Beti:
| | 1 | |
c) = −2log2(sin30o) = −2log2( |
| ) = −2*(−1) = 2 |
| | 2 | |
22 mar 20:54