oblicz

[cymerianin]

Oblicz:
a) \(\log_{12} \frac{1}{2}+\log_{12} \frac{1}{16}=\)
b)\(\log_232-\log_28=\)
c)\(\log_2(\log20+\log5)=\)
d)\(\log_72-\log_798=\)
e)\(\log_327\log_{27}3=\)
f)\(\log_59+2(\log_51-\log_53)=\)
g)\(2\log_32+\log_320,25=\)
h)\(\log_4400-2\log_45=\)

z góry dzięki za pomoc.

[kacper218]

e)
\(=\log_3 3=1\)

[eresh]

Oblicz:
a) \(\log_{12} \frac{1}{2}+\log_{12} \frac{1}{16}=\)
\

\(=\log_{\frac{1}{12}}\frac{1}{32}\)

[eresh]

Oblicz:

b)\(\log_232-\log_28=\)

\(=\log_24=2\)

[kacper218]

g)
\(=\log_3 4+\log_3 20,25=\log_3 81=4\)

[eresh]

Oblicz:

c)\(\log_2(\log20+\log5)=\)

\(=\log_2(\log 100)=\log_22=1\)

[kacper218]

d)
\(=\log_7 \frac{1}{49}=-2\)

[eresh]

Oblicz:

d)\(\log_72-\log_798=\)

\(=\log_7\frac{2}{98}=\log_77^{-2}=-2\)

[kacper218]

h)
\(=\log_4 400- \log_4 25=\log_4 16=2\)

[eresh]

Oblicz:

f)\(\log_59+2(\log_51-\log_53)=\)

\(=\log_59+2\log_51-2\log_53=\log_59+0-\log_59=0\)