Sprendimas: lU9DHR - 1
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| / R |
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| / R |
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| / R1 |
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| / R2 |
R =
$$R$$ = $$\frac{1}{\frac{1}{R1}+\frac{1}{R2}}$$
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/ (
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R =
$$R$$ = $$\frac{1}{\frac{1}{20}+\frac{1}{20}}$$
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/ (
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R =
$$R$$ = $$\frac{1}{\frac{40}{400}}$$
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/ (
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R = 1* 10$$R$$ = $$1\cdot 10$$
R = 10$$R$$ = $$10$$