log₁₀ met rekenmachien

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Bepaal x met ZRM

1. \(\log x = 0{,}22\)
2. \(\log x = -2\)
3. \(\log x = 0{,}8\)
4. \(\log x = 3{,}2\)
5. \(\log x = 1{,}1\)
6. \(\log x = 0{,}12\)
7. \(\log x = -1\)
8. \(\log x = -3{,}3\)
9. \(\log x = -0{,}9\)
10. \(\log x = -3{,}9\)
11. \(\log x = 1{,}6\)
12. \(\log x = -0{,}11\)

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Bepaal x met ZRM

Verbetersleutel

1. \(\log x = 0{,}22\\ \Leftrightarrow x = 10^{0{,}22} \\ \Leftrightarrow x \approx 1{,}6595869074376\)
2. \(\log x = -2\\ \Leftrightarrow x = 10^{-2} \\ \Leftrightarrow x =0.01\)
3. \(\log x = 0{,}8\\ \Leftrightarrow x = 10^{0{,}8} \\ \Leftrightarrow x \approx 6{,}3095734448019\)
4. \(\log x = 3{,}2\\ \Leftrightarrow x = 10^{3{,}2} \\ \Leftrightarrow x \approx 1584{,}8931924611\)
5. \(\log x = 1{,}1\\ \Leftrightarrow x = 10^{1{,}1} \\ \Leftrightarrow x \approx 12{,}589254117942\)
6. \(\log x = 0{,}12\\ \Leftrightarrow x = 10^{0{,}12} \\ \Leftrightarrow x \approx 1{,}3182567385564\)
7. \(\log x = -1\\ \Leftrightarrow x = 10^{-1} \\ \Leftrightarrow x =0.1\)
8. \(\log x = -3{,}3\\ \Leftrightarrow x = 10^{-3{,}3} \\ \Leftrightarrow x \approx 0{,}00050118723362727\)
9. \(\log x = -0{,}9\\ \Leftrightarrow x = 10^{-0{,}9} \\ \Leftrightarrow x \approx 0{,}12589254117942\)
10. \(\log x = -3{,}9\\ \Leftrightarrow x = 10^{-3{,}9} \\ \Leftrightarrow x \approx 0{,}00012589254117942\)
11. \(\log x = 1{,}6\\ \Leftrightarrow x = 10^{1{,}6} \\ \Leftrightarrow x \approx 39{,}81071705535\)
12. \(\log x = -0{,}11\\ \Leftrightarrow x = 10^{-0{,}11} \\ \Leftrightarrow x \approx 0{,}77624711662869\)