• The exponential function, exp : R → R, is the unique function f that satisfies f'(x) = f(x) for all x ER and f(0) = 1. o The natural logarithm, log, is the function inverse to the exponential function, exp: that is, for all x E R and for all y > 0, y = exp (x) if and only if x = log (y). a. Compute the definite integral xa-1 dx. b. Using your result from part a. and any appropriate rules for computing limits, show that lim / r exp t ra-l dx = t. a→0 You may use [exp (t)]ª exp (at) for all real a without proof. %3D c. Explain how, from your answers to parts a. and b., we may justify x- dx = log s.
• The exponential function, exp : R → R, is the unique function f that satisfies f'(x) = f(x) for all x ER and f(0) = 1. o The natural logarithm, log, is the function inverse to the exponential function, exp: that is, for all x E R and for all y > 0, y = exp (x) if and only if x = log (y). a. Compute the definite integral xa-1 dx. b. Using your result from part a. and any appropriate rules for computing limits, show that lim / r exp t ra-l dx = t. a→0 You may use [exp (t)]ª exp (at) for all real a without proof. %3D c. Explain how, from your answers to parts a. and b., we may justify x- dx = log s.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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