oblicz przybliżoną wartość logarytmu jeśli log 2=0,3 c)log 0,04 d)log 1600
c)
log0,04=log2²+log0,01=2log2+log10⁻²=2·0,3+(-2)=-1,4
d)
log1600=log2⁴+log100=4log2+log10²=4·0,3+2=3,2
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c)
log0,04=log2²+log0,01=2log2+log10⁻²=2·0,3+(-2)=-1,4
d)
log1600=log2⁴+log100=4log2+log10²=4·0,3+2=3,2