Definition 2 The exp function E(x) = ex is the inverse of the log function L(x) = lnx L E(x) = lnex = x, ∀x Properties • lnx is the inverse of ex ∀x > 0, E L = elnx = x • ∀x > 0, y = lnx ⇔ ey = x • graph(ex) is the reflection of graph(lnx) by line y = x • range(E) = domain(L) = (0,∞), domain(E) = range(L) = (−∞,∞) • limSection 2 De nitions (LECTURE NOTES 5) 77 (a)Verify function f(x) satis es the second property of pdfs, Z 1 1 f(x) dx= Z 4 2 1 6 xdx= x2 12 x=4 x=2 = 42 12 22 12 = 12Answer to R14 Integrate exp(x) from x = 0 to x = 0, by This problem has been solved!
Logarithmic And Exponential Functions Topics In Precalculus
