The table gives the coal consumption of a country for selected years. Use the table to answer parts (a) through (f). Year 1950 1960 1970 1980 1990 2000 2010 2012 495.5 401.9 523.1 700.4 891.5 1088.9 1051.7 888.5 Millions of Short Tons OA 1200- 80 Q Q B. 1200- 0 80 C. Ay 1200- (d) Use cubic regression to get a cubic function that approximates the data. y=0²³+²+₁+ (Round to three decimal places as needed.) 70 Q Q 5 D. Ay 1200- 0- 0 t 70
The table gives the coal consumption of a country for selected years. Use the table to answer parts (a) through (f). Year 1950 1960 1970 1980 1990 2000 2010 2012 495.5 401.9 523.1 700.4 891.5 1088.9 1051.7 888.5 Millions of Short Tons OA 1200- 80 Q Q B. 1200- 0 80 C. Ay 1200- (d) Use cubic regression to get a cubic function that approximates the data. y=0²³+²+₁+ (Round to three decimal places as needed.) 70 Q Q 5 D. Ay 1200- 0- 0 t 70
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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Part D
only HANDWRITTEN answer needed ( NOT TYPED)
Transcribed Image Text:The table gives the coal consumption of a country for selected years. Use the table to answer parts (a) through (f).
Year
1950
1960 1970 1980
1990 2000 2010
2012
495.5
401.9 523.1 700.4
891.5 1088.9 1051.7 888.5
Millions of
Short Tons
OA
AY
1200-
B.
Q
1200
Sam
80
80
t+
Q
OC.
1200-
0-
0
(d) Use cubic regression to get a cubic function that approximates the data.
y=¹²³+²+₁+O
(Round to three decimal places as needed.)
70
Q
Q
Q
Ay
1200-
0-
0
70
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