Matematica X - Algebra - Logaritmi

1. Conditii de existenta:Pentru logg(x)f(x) se pun conditiile: f(x) > 0, g(x) > 0 si g(x) 6= 1.

2. loga1 = 0.

3. logaa = 1.

4. loga(af(x)) = f(x).

5. alogaf(x) = f(x).

6. loga(xy) = logax + logay.

7. loga(xy) = logax logay.

8. logafn(x) = nlogaf(x).

9. logma fn(x) = nmlogma f(x).

10. Formula de schimbare a bazei: logax =logbxlogba

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REMEMBER !!

Every time you do this:loga(xy) = logaxlogay

loga(xy) = logax

logay

A KITTEN DIES !!