Логарифм
Основное логарифмическое тождество 𝒂 log 𝒂 𝒃 𝒂𝒂 𝒂 log 𝒂 𝒃 log 𝒂 𝒃 log 𝒂 log log 𝒂 𝒂𝒂 log 𝒂 log 𝒂 𝒃 𝒃𝒃 log 𝒂 𝒃 𝒂 log 𝒂 𝒃 =𝒃𝒃
Свойства логарифмов
𝐥𝐨𝐠 𝒂 𝟏=𝟎; 𝒂>𝟎, 𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒂 𝐥𝐨𝐠 𝒂 𝟏=𝟎; 𝒂>𝟎, 𝒂≠𝟏 𝟏𝟏=𝟎𝟎; 𝒂>𝟎, 𝒂≠𝟏 𝒂𝒂>𝟎𝟎, 𝒂𝒂≠𝟏𝟏 𝒂>𝟎, 𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝟏=𝟎; 𝒂>𝟎, 𝒂≠𝟏
𝐥𝐨𝐠 𝒂 𝒂=𝟏 𝐥𝐨𝐠 𝒂 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒂 𝐥𝐨𝐠 𝒂 𝒂=𝟏 𝒂𝒂=𝟏𝟏 𝐥𝐨𝐠 𝒂 𝒂=𝟏 ; 𝒂>𝟎, 𝒂≠𝟏 𝒂𝒂>𝟎𝟎, 𝒂𝒂≠𝟏𝟏 𝒂>𝟎, 𝒂≠𝟏
𝐥𝐨𝐠 𝒂 𝒙𝒚 = 𝐥𝐨𝐠 𝒂 𝒙 + 𝐥𝐨𝐠 𝒂 𝒚; 𝒂>𝟎, 𝒙>𝟎, 𝒚>𝟎, 𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒂 𝐥𝐨𝐠 𝒂 𝒙𝒚 = 𝐥𝐨𝐠 𝒂 𝒙 + 𝐥𝐨𝐠 𝒂 𝒚; 𝒂>𝟎, 𝒙>𝟎, 𝒚>𝟎, 𝒂≠𝟏 𝒙𝒚 𝒙𝒙𝒚𝒚 𝒙𝒚 = 𝐥𝐨𝐠 𝒂 𝒙 𝐥𝐨𝐠 𝒂 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒂 𝐥𝐨𝐠 𝒂 𝒙 𝒙𝒙 𝐥𝐨𝐠 𝒂 𝒙 + 𝐥𝐨𝐠 𝒂 𝒚; 𝒂>𝟎, 𝒙>𝟎, 𝒚>𝟎, 𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒂 𝐥𝐨𝐠 𝒂 𝒚; 𝒂>𝟎, 𝒙>𝟎, 𝒚>𝟎, 𝒂≠𝟏 𝒚𝒚; 𝒂>𝟎, 𝒙>𝟎, 𝒚>𝟎, 𝒂≠𝟏 𝒂𝒂>𝟎𝟎, 𝒙𝒙>𝟎𝟎, 𝒚𝒚>𝟎𝟎, 𝒂𝒂≠𝟏𝟏 𝒂>𝟎, 𝒙>𝟎, 𝒚>𝟎, 𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝒚; 𝒂>𝟎, 𝒙>𝟎, 𝒚>𝟎, 𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝒙𝒚 = 𝐥𝐨𝐠 𝒂 𝒙 + 𝐥𝐨𝐠 𝒂 𝒚; 𝒂>𝟎, 𝒙>𝟎, 𝒚>𝟎, 𝒂≠𝟏
𝐥𝐨𝐠 𝒂 𝒙 𝒚 = 𝐥𝐨𝐠 𝒂 𝒙 − 𝐥𝐨𝐠 𝒂 𝒚; 𝒂>𝟎,𝒙>𝟎,𝒚>𝟎,𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒂 𝐥𝐨𝐠 𝒂 𝒙 𝒚 = 𝐥𝐨𝐠 𝒂 𝒙 − 𝐥𝐨𝐠 𝒂 𝒚; 𝒂>𝟎,𝒙>𝟎,𝒚>𝟎,𝒂≠𝟏 𝒙 𝒚 𝒙 𝒚 𝒙𝒙 𝒙 𝒚 𝒚𝒚 𝒙 𝒚 𝒙 𝒚 = 𝐥𝐨𝐠 𝒂 𝒙 𝐥𝐨𝐠 𝒂 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒂 𝐥𝐨𝐠 𝒂 𝒙 𝒙𝒙 𝐥𝐨𝐠 𝒂 𝒙 − 𝐥𝐨𝐠 𝒂 𝒚; 𝒂>𝟎,𝒙>𝟎,𝒚>𝟎,𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒂 𝐥𝐨𝐠 𝒂 𝒚; 𝒂>𝟎,𝒙>𝟎,𝒚>𝟎,𝒂≠𝟏 𝒚𝒚; 𝒂>𝟎,𝒙>𝟎,𝒚>𝟎,𝒂≠𝟏 𝒂𝒂>𝟎𝟎,𝒙𝒙>𝟎𝟎,𝒚𝒚>𝟎𝟎,𝒂𝒂≠𝟏𝟏 𝒂>𝟎,𝒙>𝟎,𝒚>𝟎,𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝒚; 𝒂>𝟎,𝒙>𝟎,𝒚>𝟎,𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝒙 𝒚 = 𝐥𝐨𝐠 𝒂 𝒙 − 𝐥𝐨𝐠 𝒂 𝒚; 𝒂>𝟎,𝒙>𝟎,𝒚>𝟎,𝒂≠𝟏
𝐥𝐨𝐠 𝒂 𝒙 𝒑 =𝒑 𝐥𝐨𝐠 𝒂 𝒙; 𝒂>𝟎,𝒙>𝟎,𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒂 𝐥𝐨𝐠 𝒂 𝒙 𝒑 =𝒑 𝐥𝐨𝐠 𝒂 𝒙; 𝒂>𝟎,𝒙>𝟎,𝒂≠𝟏 𝒙 𝒑 𝒙 𝒑 𝒙𝒙 𝒙 𝒑 𝒑𝒑 𝒙 𝒑 𝒙 𝒑 =𝒑𝒑 𝐥𝐨𝐠 𝒂 𝒙; 𝒂>𝟎,𝒙>𝟎,𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒂 𝐥𝐨𝐠 𝒂 𝒙; 𝒂>𝟎,𝒙>𝟎,𝒂≠𝟏 𝒙𝒙; 𝒂>𝟎,𝒙>𝟎,𝒂≠𝟏 𝒂𝒂>𝟎𝟎,𝒙𝒙>𝟎𝟎,𝒂𝒂≠𝟏𝟏 𝒂>𝟎,𝒙>𝟎,𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝒙; 𝒂>𝟎,𝒙>𝟎,𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝒙 𝒑 =𝒑 𝐥𝐨𝐠 𝒂 𝒙; 𝒂>𝟎,𝒙>𝟎,𝒂≠𝟏 𝐥𝐨𝐠 𝒂 𝒑 𝒙= 𝟏 𝒑 𝐥𝐨𝐠 𝒂 𝒙 𝐥𝐨𝐠 𝒂 𝒒 𝒂 𝒑 = 𝒑 𝒒 𝐥𝐨𝐠 𝒂 𝒑 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒑 𝒂 𝒑 𝒂𝒂 𝒂 𝒑 𝒂 𝒑 𝒑𝒑 𝒂 𝒑 𝐥𝐨𝐠 𝒂 𝒑 𝐥𝐨𝐠 𝒂 𝒑 𝒙= 𝟏 𝒑 𝐥𝐨𝐠 𝒂 𝒙 𝐥𝐨𝐠 𝒂 𝒒 𝒂 𝒑 = 𝒑 𝒒 𝒙𝒙= 𝟏 𝒑 𝟏𝟏 𝟏 𝒑 𝒑𝒑 𝟏 𝒑 𝐥𝐨𝐠 𝒂 𝒙 𝐥𝐨𝐠 𝒂 𝒒 𝒂 𝒑 = 𝒑 𝒒 𝐥𝐨𝐠 𝒂 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒂 𝐥𝐨𝐠 𝒂 𝒙 𝐥𝐨𝐠 𝒂 𝒒 𝒂 𝒑 = 𝒑 𝒒 𝒙𝒙 𝐥𝐨𝐠 𝒂 𝒒 𝒂 𝒑 = 𝒑 𝒒 𝐥𝐨𝐠 𝒂 𝒒 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒒 𝒂 𝒒 𝒂𝒂 𝒂 𝒒 𝒂 𝒒 𝒒𝒒 𝒂 𝒒 𝐥𝐨𝐠 𝒂 𝒒 𝐥𝐨𝐠 𝒂 𝒒 𝒂 𝒑 = 𝒑 𝒒 𝒂 𝒑 𝒂𝒂 𝒂 𝒑 𝒑𝒑 𝒂 𝒑 = 𝒑 𝒒 𝒑𝒑 𝒑 𝒒 𝒒𝒒 𝒑 𝒒 𝐥𝐨𝐠 𝒂 𝒒 𝒂 𝒑 = 𝒑 𝒒 𝐥𝐨𝐠 𝒂 𝒙 𝐥𝐨𝐠 𝒂 𝒒 𝒂 𝒑 = 𝒑 𝒒 𝐥𝐨𝐠 𝒂 𝒑 𝒙= 𝟏 𝒑 𝐥𝐨𝐠 𝒂 𝒙 𝐥𝐨𝐠 𝒂 𝒒 𝒂 𝒑 = 𝒑 𝒒
𝐥𝐨𝐠 𝒂 𝒙 = 𝐥𝐨𝐠 𝒚 𝒙 𝐥𝐨𝐠 𝒚 𝒂 𝐥𝐨𝐠 𝒂 𝒙= 𝟏 𝐥𝐨𝐠 𝒙 𝒂 ; 𝒂>𝟎,𝒙>𝟎, 𝒚>𝟎,𝒂≠𝟏,𝒚≠𝟏 𝐥𝐨𝐠 𝒂 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒂 𝐥𝐨𝐠 𝒂 𝒙 = 𝐥𝐨𝐠 𝒚 𝒙 𝐥𝐨𝐠 𝒚 𝒂 𝐥𝐨𝐠 𝒂 𝒙= 𝟏 𝐥𝐨𝐠 𝒙 𝒂 ; 𝒂>𝟎,𝒙>𝟎, 𝒚>𝟎,𝒂≠𝟏,𝒚≠𝟏 𝒙 𝒙𝒙 𝒙 = 𝐥𝐨𝐠 𝒚 𝒙 𝐥𝐨𝐠 𝒚 𝒂 𝐥𝐨𝐠 𝒚 𝒙 𝐥𝐨𝐠 𝒚 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒚 𝒚𝒚 𝐥𝐨𝐠 𝒚 𝐥𝐨𝐠 𝒚 𝒙 𝒙𝒙 𝐥𝐨𝐠 𝒚 𝒙 𝐥𝐨𝐠 𝒚 𝒙 𝐥𝐨𝐠 𝒚 𝒂 𝐥𝐨𝐠 𝒚 𝒂 𝐥𝐨𝐠 𝒚 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒚 𝒚𝒚 𝐥𝐨𝐠 𝒚 𝐥𝐨𝐠 𝒚 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒚 𝒂 𝐥𝐨𝐠 𝒚 𝒙 𝐥𝐨𝐠 𝒚 𝒂 𝐥𝐨𝐠 𝒂 𝒙= 𝟏 𝐥𝐨𝐠 𝒙 𝒂 ; 𝒂>𝟎,𝒙>𝟎, 𝒚>𝟎,𝒂≠𝟏,𝒚≠𝟏 𝐥𝐨𝐠 𝒂 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒂 𝐥𝐨𝐠 𝒂 𝒙= 𝟏 𝐥𝐨𝐠 𝒙 𝒂 ; 𝒂>𝟎,𝒙>𝟎, 𝒚>𝟎,𝒂≠𝟏,𝒚≠𝟏 𝒙𝒙= 𝟏 𝐥𝐨𝐠 𝒙 𝒂 𝟏𝟏 𝟏 𝐥𝐨𝐠 𝒙 𝒂 𝐥𝐨𝐠 𝒙 𝒂 𝐥𝐨𝐠 𝒙 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒙 𝒙𝒙 𝐥𝐨𝐠 𝒙 𝐥𝐨𝐠 𝒙 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒙 𝒂 𝟏 𝐥𝐨𝐠 𝒙 𝒂 ; 𝒂>𝟎,𝒙>𝟎, 𝒚>𝟎,𝒂≠𝟏,𝒚≠𝟏 𝒂>𝟎,𝒙>𝟎, 𝒚>𝟎,𝒂≠𝟏,𝒚≠𝟏 𝒂𝒂>𝟎𝟎,𝒙𝒙>𝟎𝟎, 𝒂>𝟎,𝒙>𝟎, 𝒚>𝟎,𝒂≠𝟏,𝒚≠𝟏 𝒚𝒚>𝟎𝟎,𝒂𝒂≠𝟏𝟏,𝒚𝒚≠𝟏𝟏 𝒂>𝟎,𝒙>𝟎, 𝒚>𝟎,𝒂≠𝟏,𝒚≠𝟏 𝒂>𝟎,𝒙>𝟎, 𝒚>𝟎,𝒂≠𝟏,𝒚≠𝟏 𝐥𝐨𝐠 𝒂 𝒙= 𝟏 𝐥𝐨𝐠 𝒙 𝒂 ; 𝒂>𝟎,𝒙>𝟎, 𝒚>𝟎,𝒂≠𝟏,𝒚≠𝟏 𝐥𝐨𝐠 𝒂 𝒙 = 𝐥𝐨𝐠 𝒚 𝒙 𝐥𝐨𝐠 𝒚 𝒂 𝐥𝐨𝐠 𝒂 𝒙= 𝟏 𝐥𝐨𝐠 𝒙 𝒂 ; 𝒂>𝟎,𝒙>𝟎, 𝒚>𝟎,𝒂≠𝟏,𝒚≠𝟏
𝐥𝐨𝐠 𝒂 𝒙= 𝐥𝐨𝐠 𝒂 𝒑 𝒙 𝒑 𝐥𝐨𝐠 𝒂 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒂𝒂 𝐥𝐨𝐠 𝒂 𝐥𝐨𝐠 𝒂 𝒙= 𝐥𝐨𝐠 𝒂 𝒑 𝒙 𝒑 𝒙𝒙= 𝐥𝐨𝐠 𝒂 𝒑 𝒙 𝒑 𝐥𝐨𝐠 𝒂 𝒑 𝐥𝐥𝐨𝐨𝐠𝐠 𝐥𝐨𝐠 𝒂 𝒑 𝒂 𝒑 𝒂𝒂 𝒂 𝒑 𝒂 𝒑 𝒑𝒑 𝒂 𝒑 𝐥𝐨𝐠 𝒂 𝒑 𝐥𝐨𝐠 𝒂 𝒑 𝒙 𝒑 𝒙 𝒑 𝒙𝒙 𝒙 𝒑 𝒑𝒑 𝒙 𝒑 𝐥𝐨𝐠 𝒂 𝒑 𝒙 𝒑 𝐥𝐨𝐠 𝒂 𝒙= 𝐥𝐨𝐠 𝒂 𝒑 𝒙 𝒑
Свойства
Степеней | Корней |
𝒂 𝟎 =𝟏 | 𝒏 𝒂 𝒏 𝒏 𝒂 𝒏 𝒂 𝒏𝒏 𝒏 𝒂 𝒂𝒂 𝒏 𝒂 𝒏 𝒂 𝒏 𝒂 𝒏 𝒏𝒏 𝒏 𝒂 𝒏 =𝒂𝒂, 𝒂𝒂≥𝟎𝟎 |
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С вами с 2009 года.