log₁₀ met rekenmachien

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Bepaal x met ZRM

1. \(\log x = -1{,}4\)
2. \(\log x = -0{,}05\)
3. \(\log x = -3{,}6\)
4. \(\log x = 3{,}4\)
5. \(\log x = -0{,}28\)
6. \(\log x = -3\)
7. \(\log x = -2{,}9\)
8. \(\log x = 2{,}1\)
9. \(\log x = -2{,}4\)
10. \(\log x = 1{,}5\)
11. \(\log x = 1{,}6\)
12. \(\log x = -0{,}21\)

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Bepaal x met ZRM

Verbetersleutel

1. \(\log x = -1{,}4\\ \Leftrightarrow x = 10^{-1{,}4} \\ \Leftrightarrow x \approx 0{,}03981071705535\)
2. \(\log x = -0{,}05\\ \Leftrightarrow x = 10^{-0{,}05} \\ \Leftrightarrow x \approx 0{,}89125093813375\)
3. \(\log x = -3{,}6\\ \Leftrightarrow x = 10^{-3{,}6} \\ \Leftrightarrow x \approx 0{,}00025118864315096\)
4. \(\log x = 3{,}4\\ \Leftrightarrow x = 10^{3{,}4} \\ \Leftrightarrow x \approx 2511{,}8864315096\)
5. \(\log x = -0{,}28\\ \Leftrightarrow x = 10^{-0{,}28} \\ \Leftrightarrow x \approx 0{,}52480746024977\)
6. \(\log x = -3\\ \Leftrightarrow x = 10^{-3} \\ \Leftrightarrow x =0.001\)
7. \(\log x = -2{,}9\\ \Leftrightarrow x = 10^{-2{,}9} \\ \Leftrightarrow x \approx 0{,}0012589254117942\)
8. \(\log x = 2{,}1\\ \Leftrightarrow x = 10^{2{,}1} \\ \Leftrightarrow x \approx 125{,}89254117942\)
9. \(\log x = -2{,}4\\ \Leftrightarrow x = 10^{-2{,}4} \\ \Leftrightarrow x \approx 0{,}003981071705535\)
10. \(\log x = 1{,}5\\ \Leftrightarrow x = 10^{1{,}5} \\ \Leftrightarrow x \approx 31{,}622776601684\)
11. \(\log x = 1{,}6\\ \Leftrightarrow x = 10^{1{,}6} \\ \Leftrightarrow x \approx 39{,}81071705535\)
12. \(\log x = -0{,}21\\ \Leftrightarrow x = 10^{-0{,}21} \\ \Leftrightarrow x \approx 0{,}61659500186148\)