log₁₀ met rekenmachien

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Bepaal x met ZRM

1. \(\log x = -2{,}9\)
2. \(\log x = 2{,}5\)
3. \(\log x = -0{,}27\)
4. \(\log x = 3\)
5. \(\log x = 0{,}02\)
6. \(\log x = 1{,}9\)
7. \(\log x = -3{,}5\)
8. \(\log x = 3{,}6\)
9. \(\log x = -0{,}09\)
10. \(\log x = 0{,}7\)
11. \(\log x = 0{,}2\)
12. \(\log x = 0{,}6\)

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Bepaal x met ZRM

Verbetersleutel

1. \(\log x = -2{,}9\\ \Leftrightarrow x = 10^{-2{,}9} \\ \Leftrightarrow x \approx 0{,}0012589254117942\)
2. \(\log x = 2{,}5\\ \Leftrightarrow x = 10^{2{,}5} \\ \Leftrightarrow x \approx 316{,}22776601684\)
3. \(\log x = -0{,}27\\ \Leftrightarrow x = 10^{-0{,}27} \\ \Leftrightarrow x \approx 0{,}53703179637025\)
4. \(\log x = 3\\ \Leftrightarrow x = 10^{3} \\ \Leftrightarrow x =1000\)
5. \(\log x = 0{,}02\\ \Leftrightarrow x = 10^{0{,}02} \\ \Leftrightarrow x \approx 1{,}0471285480509\)
6. \(\log x = 1{,}9\\ \Leftrightarrow x = 10^{1{,}9} \\ \Leftrightarrow x \approx 79{,}432823472428\)
7. \(\log x = -3{,}5\\ \Leftrightarrow x = 10^{-3{,}5} \\ \Leftrightarrow x \approx 0{,}00031622776601684\)
8. \(\log x = 3{,}6\\ \Leftrightarrow x = 10^{3{,}6} \\ \Leftrightarrow x \approx 3981{,}071705535\)
9. \(\log x = -0{,}09\\ \Leftrightarrow x = 10^{-0{,}09} \\ \Leftrightarrow x \approx 0{,}8128305161641\)
10. \(\log x = 0{,}7\\ \Leftrightarrow x = 10^{0{,}7} \\ \Leftrightarrow x \approx 5{,}0118723362727\)
11. \(\log x = 0{,}2\\ \Leftrightarrow x = 10^{0{,}2} \\ \Leftrightarrow x \approx 1{,}5848931924611\)
12. \(\log x = 0{,}6\\ \Leftrightarrow x = 10^{0{,}6} \\ \Leftrightarrow x \approx 3{,}981071705535\)