Problem 15b

Given information

Here,  we have to use Taylor's Inequality to find the error ;

Taylor's Inequality is  stated as "If       for    , then the remainder     of Taylor series satisfies the Inequality 

.

Step-by-step explanation

By using the above mentioned information and at   and upto   the approximating Taylor's polynomial is;

             [ See the solution of Ex. 15(a)]

Here for using Taylor's Inequality first, have to calculate the fourth  order derivative of .

By Ex. 15 (a) we have  

Now, fourth order derivative is;