Math Problem Statement

Find the coefficients for the Taylor series of e^x centered at x = 2.

Solution

We are asked to find the coefficients cnc_n for the Taylor series of exe^x centered at x=2x = 2. The Taylor series expansion of a function f(x)f(x) around a=2a = 2 is given by:

f(x)=n=0f(n)(a)n!(xa)nf(x) = \sum_{n=0}^{\infty} \frac{f^{(n)}(a)}{n!}(x - a)^n

Here, f(x)=exf(x) = e^x, so all the derivatives of exe^x are still exe^x. Therefore, at x=2x = 2, f(n)(2)=e2f^{(n)}(2) = e^2 for all nn.

Thus, the general form for the Taylor series is:

ex=n=0e2n!(x2)ne^x = \sum_{n=0}^{\infty} \frac{e^2}{n!}(x - 2)^n

In this case, the coefficients cnc_n correspond to e2n!\frac{e^2}{n!}. Let's compute the values for c0c_0 through c4c_4.

  1. c0=e20!=e2c_0 = \frac{e^2}{0!} = e^2
  2. c1=e21!=e2c_1 = \frac{e^2}{1!} = e^2
  3. c2=e22!=e22c_2 = \frac{e^2}{2!} = \frac{e^2}{2}
  4. c3=e23!=e26c_3 = \frac{e^2}{3!} = \frac{e^2}{6}
  5. c4=e24!=e224c_4 = \frac{e^2}{4!} = \frac{e^2}{24}

So, the coefficients are:

c0=e2,c1=e2,c2=e22,c3=e26,c4=e224c_0 = e^2, \quad c_1 = e^2, \quad c_2 = \frac{e^2}{2}, \quad c_3 = \frac{e^2}{6}, \quad c_4 = \frac{e^2}{24}

Would you like a detailed explanation on how to find the general formula for Taylor series or any specific part? Here are 5 relative questions to expand:

  1. How do you compute higher-order Taylor coefficients?
  2. Why does the Taylor series of exe^x have all derivatives equal to exe^x?
  3. What does the radius of convergence mean for a Taylor series?
  4. How can you approximate functions using a truncated Taylor series?
  5. What is the error bound when truncating the Taylor series at a certain degree?

Tip: When working with Taylor series, keep in mind that the closer xx is to the center aa, the faster the series converges to the actual value of the function.

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Math Problem Analysis

Mathematical Concepts

Calculus
Taylor Series
Exponentials

Formulas

f(x) = \sum_{n=0}^{\infty} \frac{f^{(n)}(a)}{n!}(x - a)^n
e^x = \sum_{n=0}^{\infty} \frac{e^2}{n!}(x - 2)^n

Theorems

Taylor series expansion
Derivatives of exponential functions

Suitable Grade Level

Grades 11-12 (Advanced Calculus)