log₁₀ met rekenmachien

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Bepaal x met ZRM

1. \(\log x = -0{,}3\)
2. \(\log x = 0{,}7\)
3. \(\log x = 3{,}2\)
4. \(\log x = -0{,}33\)
5. \(\log x = -0{,}7\)
6. \(\log x = 3{,}1\)
7. \(\log x = 0{,}26\)
8. \(\log x = 3{,}5\)
9. \(\log x = -3{,}9\)
10. \(\log x = 0{,}12\)
11. \(\log x = 3{,}3\)
12. \(\log x = 1{,}5\)

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Bepaal x met ZRM

Verbetersleutel

1. \(\log x = -0{,}3\\ \Leftrightarrow x = 10^{-0{,}3} \\ \Leftrightarrow x \approx 0{,}50118723362727\)
2. \(\log x = 0{,}7\\ \Leftrightarrow x = 10^{0{,}7} \\ \Leftrightarrow x \approx 5{,}0118723362727\)
3. \(\log x = 3{,}2\\ \Leftrightarrow x = 10^{3{,}2} \\ \Leftrightarrow x \approx 1584{,}8931924611\)
4. \(\log x = -0{,}33\\ \Leftrightarrow x = 10^{-0{,}33} \\ \Leftrightarrow x \approx 0{,}4677351412872\)
5. \(\log x = -0{,}7\\ \Leftrightarrow x = 10^{-0{,}7} \\ \Leftrightarrow x \approx 0{,}19952623149689\)
6. \(\log x = 3{,}1\\ \Leftrightarrow x = 10^{3{,}1} \\ \Leftrightarrow x \approx 1258{,}9254117942\)
7. \(\log x = 0{,}26\\ \Leftrightarrow x = 10^{0{,}26} \\ \Leftrightarrow x \approx 1{,}81970085861\)
8. \(\log x = 3{,}5\\ \Leftrightarrow x = 10^{3{,}5} \\ \Leftrightarrow x \approx 3162{,}2776601684\)
9. \(\log x = -3{,}9\\ \Leftrightarrow x = 10^{-3{,}9} \\ \Leftrightarrow x \approx 0{,}00012589254117942\)
10. \(\log x = 0{,}12\\ \Leftrightarrow x = 10^{0{,}12} \\ \Leftrightarrow x \approx 1{,}3182567385564\)
11. \(\log x = 3{,}3\\ \Leftrightarrow x = 10^{3{,}3} \\ \Leftrightarrow x \approx 1995{,}2623149689\)
12. \(\log x = 1{,}5\\ \Leftrightarrow x = 10^{1{,}5} \\ \Leftrightarrow x \approx 31{,}622776601684\)