log₁₀ met rekenmachien

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Bepaal x met ZRM

1. \(\log x = 0{,}34\)
2. \(\log x = -1{,}5\)
3. \(\log x = -1{,}1\)
4. \(\log x = 2{,}8\)
5. \(\log x = -0{,}27\)
6. \(\log x = -0{,}09\)
7. \(\log x = -3{,}9\)
8. \(\log x = -0{,}8\)
9. \(\log x = -0{,}31\)
10. \(\log x = 0{,}33\)
11. \(\log x = -0{,}26\)
12. \(\log x = -1\)

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Bepaal x met ZRM

Verbetersleutel

1. \(\log x = 0{,}34\\ \Leftrightarrow x = 10^{0{,}34} \\ \Leftrightarrow x \approx 2{,}1877616239496\)
2. \(\log x = -1{,}5\\ \Leftrightarrow x = 10^{-1{,}5} \\ \Leftrightarrow x \approx 0{,}031622776601684\)
3. \(\log x = -1{,}1\\ \Leftrightarrow x = 10^{-1{,}1} \\ \Leftrightarrow x \approx 0{,}079432823472428\)
4. \(\log x = 2{,}8\\ \Leftrightarrow x = 10^{2{,}8} \\ \Leftrightarrow x \approx 630{,}95734448019\)
5. \(\log x = -0{,}27\\ \Leftrightarrow x = 10^{-0{,}27} \\ \Leftrightarrow x \approx 0{,}53703179637025\)
6. \(\log x = -0{,}09\\ \Leftrightarrow x = 10^{-0{,}09} \\ \Leftrightarrow x \approx 0{,}8128305161641\)
7. \(\log x = -3{,}9\\ \Leftrightarrow x = 10^{-3{,}9} \\ \Leftrightarrow x \approx 0{,}00012589254117942\)
8. \(\log x = -0{,}8\\ \Leftrightarrow x = 10^{-0{,}8} \\ \Leftrightarrow x \approx 0{,}15848931924611\)
9. \(\log x = -0{,}31\\ \Leftrightarrow x = 10^{-0{,}31} \\ \Leftrightarrow x \approx 0{,}48977881936845\)
10. \(\log x = 0{,}33\\ \Leftrightarrow x = 10^{0{,}33} \\ \Leftrightarrow x \approx 2{,}1379620895022\)
11. \(\log x = -0{,}26\\ \Leftrightarrow x = 10^{-0{,}26} \\ \Leftrightarrow x \approx 0{,}54954087385762\)
12. \(\log x = -1\\ \Leftrightarrow x = 10^{-1} \\ \Leftrightarrow x =0.1\)