Math Problem Statement

Obtain a Taylor expansion for e^√x. Plot the exact function in the range 0≤x≤5 against the solution using truncated Taylor series. Note down the truncation error at 

x=5 as you consider higher order terms of the series. Consider the first seven terms of the series.

Solution

The plot shows a comparison between the exact function exe^{\sqrt{x}} and the truncated Taylor series (up to seven terms) in the range 0x50 \leq x \leq 5.

Truncation Error at x=5x = 5:

  • The exact value of e5e^{\sqrt{5}} is approximately 9.3569.356.
  • The value of the truncated Taylor series at x=5x = 5 is approximately 12.01012.010.
  • The truncation error at x=5x = 5 is approximately 2.6532.653.

This error indicates the difference between the exact value and the approximation using the first seven terms of the Taylor series.

Would you like further details or have any questions?

Here are 5 related questions:

  1. How is the convergence of the Taylor series for exe^{\sqrt{x}} affected as xx increases?
  2. How do higher-order terms affect the truncation error?
  3. Can you generalize the pattern for the Taylor expansion of other functions involving square roots?
  4. How does the radius of convergence of a Taylor series impact its accuracy?
  5. How would the Taylor expansion change if centered at a different point?

Tip: The convergence of a Taylor series is faster when approximating near the point where the series is centered (in this case, around x=0x = 0).

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Math Problem Analysis

Mathematical Concepts

Taylor Series
Exponential Functions
Square Roots
Approximation

Formulas

e^√x ≈ 1 + (x^(1/2)) + (x^(1/2))^2 / 2! + (x^(1/2))^3 / 3! + ... (up to 7 terms)
Exact value of e^√x

Theorems

Taylor Expansion
Error Estimation in Taylor Series

Suitable Grade Level

Grades 11-12 / College