How can Taylor Series help us find a value of h for a specific error tolerance?

In summary, to find a value of h such that for |x|<h implies sin(x)=x-x^3/6 +x^5/120 + R where |R|< 10^-4, we use the Taylor series for sinx which is ∑ (-x)2n+1/(2n+1)!. To find the remainder, we use a specific formula.
  • #1
HappyN
16
0
how would you use Taylor Series to answer this:
Find a value of h such that for |x|<h implies sin(x)=x-x^3/6 +x^5/120 + R where |R|< 10^-4?
 
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  • #2
Welcome to PF!

Hi HappyN! Welcome to PF! :smile:

(try using the X2 icon just above the Reply box :wink:)
HappyN said:
how would you use Taylor Series to answer this:
Find a value of h such that for |x|<h implies sin(x)=x-x^3/6 +x^5/120 + R where |R|< 10^-4?

Well, those are the first thre terms of the series for sinx (∑ (-x)2n+1/(2n+1)!) …

so what formula do you know for the remainder? :smile:
 
  • #3
What formula should we know for the remainder?? Am stuck at this point..
 

FAQ: How can Taylor Series help us find a value of h for a specific error tolerance?

What is Taylor series?

Taylor series is a mathematical concept that represents a function as an infinite sum of terms that are calculated from the values of the function's derivatives at a single point. It is often used to approximate a function and make it easier to work with.

How do you use Taylor series to find h?

To find h using Taylor series, you first need to determine the function and the point at which you want to approximate the function. Then, you calculate the derivatives of the function at that point and plug them into the Taylor series formula. This will give you an infinite series, but you can choose to truncate it at a certain point to get a more accurate approximation of h.

What is the purpose of finding h using Taylor series?

The main purpose of finding h using Taylor series is to approximate a function and make it easier to work with. It can also be used to find the value of a function at a point where it may be difficult or impossible to calculate directly.

Can Taylor series be used for any type of function?

Yes, Taylor series can be used for any type of function as long as it is differentiable (meaning it has derivatives at every point). However, the accuracy of the approximation may vary depending on the complexity of the function.

Are there any limitations to using Taylor series to find h?

One limitation of using Taylor series to find h is that it can only approximate a function around a single point. If you need to approximate a function over a larger interval, you would need to use multiple Taylor series centered at different points. Additionally, the accuracy of the approximation may decrease as you move further away from the center point.

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