Graph natural log of y
Problem
Solution
Identify the relationship between the variables. The task is to graph the natural logarithm of
y which is typically expressed asx=ln(y) Rewrite the equation in exponential form to make it easier to plot points. Since the natural log is the inverse of the exponential function with base
e the equation is equivalent toy=ex Determine the domain and range. For the natural log function
ln(y) the inputy must be strictly positive (y>0 . The outputx can be any real number.Identify key points for the graph. When
x=0 y=e0=1 Whenx=1 y=e1≈2.718 Whenx=−1 y=e(−1)≈0.368 Recognize the asymptote. As
x approaches negative infinity,y approaches0 This means thex axis (wherey=0 is a horizontal asymptote for the functiony=ex or a vertical asymptote aty=0 for the relationx=ln(y) relative to they axis.Sketch the curve. The graph is a smooth, increasing curve that passes through
(0,1) and(1,e) plotted on a coordinate system where the horizontal axis isx and the vertical axis isy
Final Answer
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