Math Problem Statement
(a) Find the Riemann sum for f(x) = 5 sin x, 0 β€ x β€ 3π/2, with six terms, taking the sample points to be right endpoints. (Round your answers to six decimal places.) R6 =
Solution
To compute the Riemann sum for the function over the interval with 6 subintervals, using right endpoints, follow these steps:
Step 1: Determine the width of each subinterval.
The width of each subinterval, denoted by , is calculated as:
Step 2: Identify the sample points (right endpoints).
The right endpoints are given by:
For , the right endpoints are:
Step 3: Calculate the function values at these points.
We now evaluate at each of these right endpoints:
Using the values of :
Simplifying these:
Step 4: Compute the Riemann sum.
The Riemann sum is given by:
Substitute the values of and :
Now, calculate the result:
Thus, the Riemann sum is approximately .
Would you like more details on any of the steps? Here are some related questions:
- What is the general formula for the Riemann sum?
- How do you find left and midpoint Riemann sums?
- Can the number of subintervals affect the accuracy of Riemann sums?
- What happens when using non-uniform subintervals?
- How is the Riemann sum related to the definite integral?
Tip: Increasing the number of subintervals generally increases the accuracy of the Riemann sum approximation to the integral.
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Math Problem Analysis
Mathematical Concepts
Calculus
Riemann Sums
Trigonometric Functions
Formulas
Riemann sum formula: R_n = Ξ£ f(x_i) * Ξx
Function: f(x) = 5 sin(x)
Subinterval width: Ξx = (b - a) / n
Theorems
Riemann sum approximation to the definite integral
Sine function properties
Suitable Grade Level
Grades 11-12 or Early College
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