2023-12-26 10:52:32 +03:00
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$$
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f(a)=f(b)
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$$
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okay
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$$
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a^2 - b^2 = (a+b)(a-b)
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$$
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2023-12-26 16:44:29 +03:00
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2023-12-26 16:55:06 +03:00
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$$
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2023-12-26 17:12:32 +03:00
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\begingroup
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\allowdisplaybreaks
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\begin{align}
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2023-12-26 16:56:10 +03:00
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et(t) = \left\lfloor 23 \cdot \left(3 \sqrt[3]{t} + 0.7 \cdot \log(t + 5) + 13 + \frac{t \bmod 86400}{86400} + 11 \cdot \log_2(t) + 17 \cdot \sin\left(\frac{2 \pi t}{86400}\right) + 2 \cdot \cos\left(\frac{2 \pi t}{86400}\right) + \left\lfloor \frac{t}{86400} \right\rfloor^2\right) \right\rfloor \bmod 4
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2023-12-26 17:12:32 +03:00
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\end{align}%
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\endgroup
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2023-12-26 16:55:06 +03:00
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$$
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