log₁₀ met rekenmachien

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Bepaal x met ZRM

1. \(\log x = 1,2\)
2. \(\log x = -1\)
3. \(\log x = -2,5\)
4. \(\log x = 3,4\)
5. \(\log x = -0,17\)
6. \(\log x = 0,1\)
7. \(\log x = 0,36\)
8. \(\log x = -1,4\)
9. \(\log x = 2,7\)
10. \(\log x = -3,2\)
11. \(\log x = 0,08\)
12. \(\log x = 0,3\)

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Bepaal x met ZRM

Verbetersleutel

1. \(\log x = 1,2\\ \Leftrightarrow x = 10^{1,2} \\ \Leftrightarrow x \approx 15,848931924611\)
2. \(\log x = -1\\ \Leftrightarrow x = 10^{-1} \\ \Leftrightarrow x =0.1\)
3. \(\log x = -2,5\\ \Leftrightarrow x = 10^{-2,5} \\ \Leftrightarrow x \approx 0,0031622776601684\)
4. \(\log x = 3,4\\ \Leftrightarrow x = 10^{3,4} \\ \Leftrightarrow x \approx 2511,8864315096\)
5. \(\log x = -0,17\\ \Leftrightarrow x = 10^{-0,17} \\ \Leftrightarrow x \approx 0,67608297539198\)
6. \(\log x = 0,1\\ \Leftrightarrow x = 10^{0,1} \\ \Leftrightarrow x \approx 1,2589254117942\)
7. \(\log x = 0,36\\ \Leftrightarrow x = 10^{0,36} \\ \Leftrightarrow x \approx 2,2908676527678\)
8. \(\log x = -1,4\\ \Leftrightarrow x = 10^{-1,4} \\ \Leftrightarrow x \approx 0,03981071705535\)
9. \(\log x = 2,7\\ \Leftrightarrow x = 10^{2,7} \\ \Leftrightarrow x \approx 501,18723362727\)
10. \(\log x = -3,2\\ \Leftrightarrow x = 10^{-3,2} \\ \Leftrightarrow x \approx 0,00063095734448019\)
11. \(\log x = 0,08\\ \Leftrightarrow x = 10^{0,08} \\ \Leftrightarrow x \approx 1,2022644346174\)
12. \(\log x = 0,3\\ \Leftrightarrow x = 10^{0,3} \\ \Leftrightarrow x \approx 1,9952623149689\)