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the device according to the дл построени flat curved at = f1 (x) and (x = ground) curves at = f1 (x) ±f2 (x), = f1 (x) * ground (x), = f1 (x) / ground (x)
the device according to the дл построени flat curved at = f1 (x) and (x = ground) curves at = f1 (x) ±f2 (x), = f1 (x) * ground (x), = f1 (x) / ground (x)