Math Problem Statement
Find the linearization of the function
f(x)=cube root (7+x)
centered at a=1
.
Answer: L(x)=
Use this linearization to approximate cube root (8.06)
.
Answer:
Solution
To find the linearization of the function centered at , we first need to calculate and .
-
Calculate : [ f(1) = \sqrt[3]{7 + 1} = \sqrt[3]{8} = 2 ]
-
Calculate the derivative : Using the chain rule:
-
Evaluate : [ f'(1) = \frac{1}{3\sqrt[3]{(7 + 1)^2}} = \frac{1}{3\sqrt[3]{8^2}} = \frac{1}{3 \cdot 4} = \frac{1}{12} ]
-
Construct the linearization : The formula for the linear approximation (linearization) at is: Substituting the values we found:
So, the linearization is:
Use the linearization to approximate :
To approximate , we can use the linearization at :
- Substitute into :
Thus, the approximation for is:
Would you like any details or have any questions? Here are some related questions:
- What is the significance of linearization in calculus?
- How does the linear approximation compare to the actual value?
- Can you find the linearization at a different point, say ?
- What would be the effect of using a point further away from for linearization?
- How do you find the derivative of more complex functions?
Tip: When approximating values, linearization is most accurate for points close to the center of approximation.
Ask a new question for Free
By Image
Drop file here or Click Here to upload
Math Problem Analysis
Mathematical Concepts
Calculus
Linearization
Derivatives
Formulas
L(x) = f(a) + f'(a)(x - a)
f'(x) = 1/3(7 + x)^(-2/3)
Theorems
Linear approximation theorem
Suitable Grade Level
Grades 11-12
Related Recommendation
Linearization of f(x) = ∛√x at a = 125
Decimal Approximation Using Linear Approximation for Cube Root of 64.42
Estimating (27.09)^2/3 Using Linearization at a = 27
Estimate (9/10)^(1/3) Using Linearization of f(x)=(1+4x)^(1/3)
Linear Approximation of √(4 - x) at x = 0 and Approximations of √3.9 and √3.99