log₁₀ met rekenmachien

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Bepaal x met ZRM

1. \(\log x = 2,5\)
2. \(\log x = 0,35\)
3. \(\log x = 3\)
4. \(\log x = 3,3\)
5. \(\log x = 0,31\)
6. \(\log x = 1,2\)
7. \(\log x = 0,7\)
8. \(\log x = 3,5\)
9. \(\log x = 0,23\)
10. \(\log x = -0,21\)
11. \(\log x = 0,28\)
12. \(\log x = -0,07\)

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Bepaal x met ZRM

Verbetersleutel

1. \(\log x = 2,5\\ \Leftrightarrow x = 10^{2,5} \\ \Leftrightarrow x \approx 316,22776601684\)
2. \(\log x = 0,35\\ \Leftrightarrow x = 10^{0,35} \\ \Leftrightarrow x \approx 2,2387211385683\)
3. \(\log x = 3\\ \Leftrightarrow x = 10^{3} \\ \Leftrightarrow x =1000\)
4. \(\log x = 3,3\\ \Leftrightarrow x = 10^{3,3} \\ \Leftrightarrow x \approx 1995,2623149689\)
5. \(\log x = 0,31\\ \Leftrightarrow x = 10^{0,31} \\ \Leftrightarrow x \approx 2,0417379446695\)
6. \(\log x = 1,2\\ \Leftrightarrow x = 10^{1,2} \\ \Leftrightarrow x \approx 15,848931924611\)
7. \(\log x = 0,7\\ \Leftrightarrow x = 10^{0,7} \\ \Leftrightarrow x \approx 5,0118723362727\)
8. \(\log x = 3,5\\ \Leftrightarrow x = 10^{3,5} \\ \Leftrightarrow x \approx 3162,2776601684\)
9. \(\log x = 0,23\\ \Leftrightarrow x = 10^{0,23} \\ \Leftrightarrow x \approx 1,6982436524617\)
10. \(\log x = -0,21\\ \Leftrightarrow x = 10^{-0,21} \\ \Leftrightarrow x \approx 0,61659500186148\)
11. \(\log x = 0,28\\ \Leftrightarrow x = 10^{0,28} \\ \Leftrightarrow x \approx 1,9054607179632\)
12. \(\log x = -0,07\\ \Leftrightarrow x = 10^{-0,07} \\ \Leftrightarrow x \approx 0,85113803820238\)