Letf(x)=4x. (a) Sketch the region R under the graph of fon the interval (0, 2). y 1 2 3 Find its exact area using geometry. square units 5 6 DOO 1 (c) Repeat part (b) with eight subintervals of equal length (n=8). square units 2 3 3 6 4 2 1 2 3 (b) Use a Riemann sum with four subintervals of equal length (n=4) to approximate the area of R. Choose the representative points to be the left endpoints of the subintervals. square units (d) Compare the approximations obtained in parts (b) and (c) with the exact area found in part (a). Do the approximations improve with larger in? O Yes O No 5 7 4 2 1 2 3 6

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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6.3 Q1

Letf(x)=4x.
(a) Sketch the region R under the graph of fon the interval (0, 2).
y
1
2 3
Find its exact area using geometry.
square units
5
6
DOO
1
(c) Repeat part (b) with eight subintervals of equal length (n=8).
square units
2
3
3
6
4
2
1
2
3
(b) Use a Riemann sum with four subintervals of equal length (n=4) to approximate the area of R. Choose the representative points to be the left endpoints of the subintervals.
square units
(d) Compare the approximations obtained in parts (b) and (c) with the exact area found in part (a). Do the approximations improve with larger in?
O Yes
O No
5
7
4
2
1
2
3
6
Transcribed Image Text:Letf(x)=4x. (a) Sketch the region R under the graph of fon the interval (0, 2). y 1 2 3 Find its exact area using geometry. square units 5 6 DOO 1 (c) Repeat part (b) with eight subintervals of equal length (n=8). square units 2 3 3 6 4 2 1 2 3 (b) Use a Riemann sum with four subintervals of equal length (n=4) to approximate the area of R. Choose the representative points to be the left endpoints of the subintervals. square units (d) Compare the approximations obtained in parts (b) and (c) with the exact area found in part (a). Do the approximations improve with larger in? O Yes O No 5 7 4 2 1 2 3 6
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