
Logaritmické rovnice
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•
Mathematics
•
9th - 12th Grade
•
Hard
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16 questions
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1.
FLASHCARD QUESTION
Front
Definice logaritmu
Back
Logaritmus je inverzní funkce k exponenciální funkci. Logaritmus čísla b při základu a je exponent, do kterého musíme umístit a, abychom dostali b. Značí se jako log_a(b).
2.
FLASHCARD QUESTION
Front
Základ logaritmu
Back
Základ logaritmu je číslo, které se umocňuje, aby se získalo dané číslo. Například v log_2(8) je základ 2.
3.
FLASHCARD QUESTION
Front
Logaritmické pravidlo: log(a) + log(b)
Back
log(a) + log(b) = log(a*b). Toto pravidlo říká, že součet logaritmů je logaritmus součinu.
4.
FLASHCARD QUESTION
Front
Logaritmické pravidlo: log(a) - log(b)
Back
log(a) - log(b) = log(a/b). Toto pravidlo říká, že rozdíl logaritmů je logaritmus podílu.
5.
FLASHCARD QUESTION
Front
Logaritmické pravidlo: k * log(a)
Back
k * log(a) = log(a^k). Toto pravidlo říká, že násobení logaritmu konstantou je ekvivalentní umocnění argumentu.
6.
FLASHCARD QUESTION
Front
Jak vyřešit logaritmickou rovnici: log(x) = a
Back
Převeďte na exponenciální formu: x = 10^a (pokud je základ 10) nebo x = b^a (pokud je základ b).
7.
FLASHCARD QUESTION
Front
Příklad logaritmické rovnice: log(x+6) = 1
Back
x + 6 = 10^1, tedy x + 6 = 10, x = 4.
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