Q1 A cross-section of a duct is an ellipse, which has semi-axes a and b, a>b. The duct conveys water. The ellipse area, A, is determined by the formula: A = n ab The perimeter, P, of an ellipse is T/2 P = 4a [ V1-e sin? udu -b² va e = a where e is ellipse's eccentricity. Assume that the duct area A=2 m². Find a and b of the duct for which a minimum of P is attained, provided the duct area A is fixed. Show all your calculations Amin =...... m, bmin- ......m, Pmin=....m

Advanced Engineering Mathematics
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ISBN:9780470458365
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Chapter2: Second-order Linear Odes
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Q1 A cross-section of a duct is an ellipse, which has semi-axes a and b, a>b. The duct conveys
water. The ellipse area, A, is determined by the formula:
A = n ab
The perimeter, P, of an ellipse is
T/2
P = 4a [ V1-e sin? udu
-b²
va
e =
a
where e is ellipse's eccentricity.
Assume that the duct area A=2 m². Find a and b of the duct for which a minimum of P is attained,
provided the duct area A is fixed. Show all your calculations
Amin =...... m, bmin-
......m, Pmin=....m
Transcribed Image Text:Q1 A cross-section of a duct is an ellipse, which has semi-axes a and b, a>b. The duct conveys water. The ellipse area, A, is determined by the formula: A = n ab The perimeter, P, of an ellipse is T/2 P = 4a [ V1-e sin? udu -b² va e = a where e is ellipse's eccentricity. Assume that the duct area A=2 m². Find a and b of the duct for which a minimum of P is attained, provided the duct area A is fixed. Show all your calculations Amin =...... m, bmin- ......m, Pmin=....m
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