Approximate the area under the curve f(x)=x+3 over the interval [1,5] using the Right Riemann sum with 8 subintervals.
A
9.75
B
9.96
C
9.54
D
9.72
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1
Divide the interval [1, 5] into 8 equal subintervals. To do this, calculate the width of each subinterval, Δx, using the formula Δx = (b - a) / n, where a = 1, b = 5, and n = 8.
Determine the right endpoints of each subinterval. These are the x-values at which the function will be evaluated. The right endpoints are calculated as x_i = a + i * Δx for i = 1, 2, ..., n.
Evaluate the function f(x) = √(x + 3) at each of the right endpoints. This means substituting each x_i into the function to find f(x_i).
Multiply each function value f(x_i) by the width of the subinterval, Δx. This gives the area of each rectangle in the Right Riemann sum approximation.
Add up all the areas of the rectangles to approximate the total area under the curve. This sum is the Right Riemann sum approximation for the given function over the interval [1, 5].