dt 7. For x > 0 define L(x) = ft. Show that L(xy) = L(x) + L(y). Show that L'(x) = 1/x. Show that L is the inverse to the exponential function E(x) defined by the power series E(x) = Σ0x² /k! k=0 (Hint: Consider the derivative of the composition L o E. Be careful with domains and ranges. You may use any properties of the function E that we developed in the lectures.)

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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7. For x > 0 define L(x) = f . Show that L(xy) = L(x) + L(y). Show
that L'(x) = 1/x. Show that L is the inverse to the exponential function
E(x) defined by the power series E(x) = x/k!
(Hint: Consider the derivative of the composition L o E. Be careful with
domains and ranges. You may use any properties of the function E that we
developed in the lectures.)
Transcribed Image Text:X 7. For x > 0 define L(x) = f . Show that L(xy) = L(x) + L(y). Show that L'(x) = 1/x. Show that L is the inverse to the exponential function E(x) defined by the power series E(x) = x/k! (Hint: Consider the derivative of the composition L o E. Be careful with domains and ranges. You may use any properties of the function E that we developed in the lectures.)
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