log₁₀ met rekenmachien

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Bepaal x met ZRM

1. \(\log x = 0{,}4\)
2. \(\log x = -0{,}36\)
3. \(\log x = 0{,}1\)
4. \(\log x = -0{,}9\)
5. \(\log x = -0{,}7\)
6. \(\log x = 3{,}8\)
7. \(\log x = 1{,}2\)
8. \(\log x = -0{,}25\)
9. \(\log x = 2{,}3\)
10. \(\log x = 0{,}6\)
11. \(\log x = 0{,}03\)
12. \(\log x = 2{,}2\)

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Bepaal x met ZRM

Verbetersleutel

1. \(\log x = 0{,}4\\ \Leftrightarrow x = 10^{0{,}4} \\ \Leftrightarrow x \approx 2{,}5118864315096\)
2. \(\log x = -0{,}36\\ \Leftrightarrow x = 10^{-0{,}36} \\ \Leftrightarrow x \approx 0{,}43651583224017\)
3. \(\log x = 0{,}1\\ \Leftrightarrow x = 10^{0{,}1} \\ \Leftrightarrow x \approx 1{,}2589254117942\)
4. \(\log x = -0{,}9\\ \Leftrightarrow x = 10^{-0{,}9} \\ \Leftrightarrow x \approx 0{,}12589254117942\)
5. \(\log x = -0{,}7\\ \Leftrightarrow x = 10^{-0{,}7} \\ \Leftrightarrow x \approx 0{,}19952623149689\)
6. \(\log x = 3{,}8\\ \Leftrightarrow x = 10^{3{,}8} \\ \Leftrightarrow x \approx 6309{,}5734448019\)
7. \(\log x = 1{,}2\\ \Leftrightarrow x = 10^{1{,}2} \\ \Leftrightarrow x \approx 15{,}848931924611\)
8. \(\log x = -0{,}25\\ \Leftrightarrow x = 10^{-0{,}25} \\ \Leftrightarrow x \approx 0{,}56234132519035\)
9. \(\log x = 2{,}3\\ \Leftrightarrow x = 10^{2{,}3} \\ \Leftrightarrow x \approx 199{,}52623149689\)
10. \(\log x = 0{,}6\\ \Leftrightarrow x = 10^{0{,}6} \\ \Leftrightarrow x \approx 3{,}981071705535\)
11. \(\log x = 0{,}03\\ \Leftrightarrow x = 10^{0{,}03} \\ \Leftrightarrow x \approx 1{,}0715193052376\)
12. \(\log x = 2{,}2\\ \Leftrightarrow x = 10^{2{,}2} \\ \Leftrightarrow x \approx 158{,}48931924611\)