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--- 미적분:자연로그함수 [2025/09/29 03:40] – [자연로그함수(Natural logarithm)] masteraccount
+++ 미적분:자연로그함수 [2025/09/30 01:25] (current) – masteraccount
@@ Line 1: / Line 1: @@
+=====자연로그함수(Natural Logarithm Function)=====
+> [[미적분:자연지수함수]]의 역함수가 자연로그함수임\\
-=====공식=====
+====공식===
-$ \Large \ln(x) = \int_1^x \frac{1}{t} dt, \quad x>0 $ \\
+$ y=ln <=> e^y=x $
+====적분====
+$ \ln x = \int_{1}^{x} \frac{1}{t} dt, \quad x > 0 $ \\
+\\
 \\
-* $ ln(x) = \log_e x  <= > e^y = x$
+===변수설명===
+원래 x축이었던것 = t \\
+x= 범위 \\
+ln(3)이라면 t라는 좌표꼐 x축에서 1~3까지보겟다.