Linearization of ln(7x) at a=1/7

In summary, the linearization problem is a mathematical approach to approximate non-linear functions with simpler, linear functions for easier analysis and problem-solving. It is important because many real-world problems involve non-linear functions and it allows for the use of simpler mathematical tools. Linearization is typically done by using the first-order Taylor series expansion and has various applications in fields such as physics, engineering, economics, and finance. However, it also has limitations as it is only an approximation and may introduce errors and inaccuracies.
  • #1
h0meless
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0

Homework Statement


find the linearization of L(x) at a.
f(x)=ln7x, a=1/7


Homework Equations


f(a)+f'(a)(x-a)


The Attempt at a Solution



i got f(1/7)=0 and f'(1/7)=9.12
then shouldn't it be 0+.9.12(x-0)=9.12x?
 
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  • #2
Not quite - Check your derivative again - if it helps, remember, ln(ax) = ln(a) + ln(x).
 

What is linearization problem?

The linearization problem is a mathematical problem where a non-linear function is approximated by a simpler, linear function. This approximation is done to make it easier to analyze the non-linear function and solve problems related to it.

Why is linearization important?

Linearization is important because many real-world problems involve non-linear functions, and it is often easier to analyze and solve these problems when they are approximated by linear functions. It also allows for the use of simpler mathematical tools and techniques.

How is linearization done?

Linearization is typically done by using the first-order Taylor series expansion of the function around a certain point. This involves finding the slope of the tangent line at that point and using it to approximate the function in a small region around that point.

What are the applications of linearization?

Linearization has many applications in various fields, including physics, engineering, economics, and finance. It is used to approximate complex non-linear systems and make them easier to analyze and solve. It also helps in making predictions and understanding the behavior of systems.

What are the limitations of linearization?

Linearization is only an approximation and may not accurately represent the behavior of the non-linear function in all regions. It is also limited to small regions around the chosen point of approximation. Additionally, it may introduce errors and inaccuracies in the final solution.

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