know what the derivative of e^(g(x)) is and what the derivative of In(g(x)) is. I.e. the chain rule for the exponential function f(x)=e^x and the chain rule for the natural log f(x)=In(x).
know what the derivative of e^(g(x)) is and what the derivative of In(g(x)) is. I.e. the chain rule for the exponential function f(x)=e^x and the chain rule for the natural log f(x)=In(x).
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Step 1
From chain rule
If g(x) is a differentiable function, then the derivative of eg(x) is g'(x)*eg(x) .
Let y = eg(x) , differentiating y with respect to x
dy/dx = d/dx[eg(x)]
Let g(x) = t , y becomes y=et
dy/dx can be written as
dy/dx = (dy/dt)*(dt/dx)
dy/dx = d/dt(y)*d/dx(t)
dy/dx = d/dt(et )*d/dx[g(x)]
dy/dx = et *g'(x) , putting the value of t
dy/dx = eg(x)*g'(x)
dy/dx = g'(x)*eg(x)
Using formula d/dx(ex ) = ex
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