Chapter6: Exponential And Logarithmic Functions
Section6.8: Fitting Exponential Models To Data
Problem 57SE: Use a graphing utility to find an exponential regression formula f(x) and a logarithmic regression...
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![3.3.1. Derivatives of Logarithmic Functions
The derivative of the logarithmic function is determined by the
following theorem.
Theorem 3.3 Chain Rule of the Derivative of Logarithmic Function
Let a be a positive real number (a # 1) and let u be a differentiable
function of x and u(x) > 0, then
1 du
и dx
du
(loga u)
(In u)
dx
(In a)u dx
dx
The second formula is a special case of the first formula since the
natural logarithm In u = log, u.
In the first formula we can set
a = e thus In a = In e = 1.
Question:
1. Find the derivative of the following
function:
y = ln vtan x](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd74ec04f-b392-4e2f-8306-274413dbad98%2F27fb65b1-7665-4027-b34f-f9ee7362aeef%2Fusxjz5g_processed.png&w=3840&q=75)
Transcribed Image Text:3.3.1. Derivatives of Logarithmic Functions
The derivative of the logarithmic function is determined by the
following theorem.
Theorem 3.3 Chain Rule of the Derivative of Logarithmic Function
Let a be a positive real number (a # 1) and let u be a differentiable
function of x and u(x) > 0, then
1 du
и dx
du
(loga u)
(In u)
dx
(In a)u dx
dx
The second formula is a special case of the first formula since the
natural logarithm In u = log, u.
In the first formula we can set
a = e thus In a = In e = 1.
Question:
1. Find the derivative of the following
function:
y = ln vtan x
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