(a) Parameterize the curve with an equation of the form y = cx²/3, x > 0, that passes through the point P in the first quadrant with coordinates (a, b). Choose a parameterization of the form x = fi(t) = ktp y = 9₁ (t) = mt², where k, m are constants that depend on a and b (but not c), and p, q are postive integers. Include a domain for your parameterization and verify that your parameterization is correct. (b) Suppose the coordinates x and y are measured in meters. What are the units of the parameter t in part (a)? Explain your reasoning. (c) Use the parameterization of the curve from part (a) to parameterize the tangent line to the curve at P. Be sure to include a domain for the parameterization. Do this by first using the parameterization of the curve to find a Cartesian equation of the tangent line at P. Then using the function y = 9₁(t) from part (a) for the y-coordinate function of the line, find an expression for the x-coordinate function. (d) Use your parameterizations from parts (a) and (c) to find simplified ex- pressions (all in terms of only t and/or dt) for the following: (i) the length of a differential rectangle (parallel to the x-aris) of the region R described above in terms of the parameter t. Check that your expression is dimensionally correct. Include a picture showing the region, the differential rectangle, and the coordinates of the endpoints of the differential rectangle to help with your explanation. (ii) the width of the differential rectangle. Check that your expression is dimensionally correct. (iii) the area of the differential rectangle. Check that your expression is dimensionally correct.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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The purpose of this problem is to compute the area of the region R bounded by a curve of the form y = cx^(2/3) , x ≥ 0, the tangent line to that curve at the point P with coordinates (a, b) in the first quadrant, and the negative x-axis
(a) Parameterize the curve with an equation of the form y = cr²/3, x ≥ 0,
that passes through the point P in the first quadrant with coordinates (a, b).
Choose a parameterization of the form
£ = fi(t) = ktP
y = 9₁ (t) = mt⁹,
where k, m are constants that depend on a and b (but not c), and p, q are
postive integers. Include a domain for your parameterization and verify that
your parameterization is correct.
(b) Suppose the coordinates x and y are measured in meters. What are the
units of the parameter t in part (a)? Explain your reasoning.
(c) Use the parameterization of the curve from part (a) to parameterize
the tangent line to the curve at P. Be sure to include a domain for the
parameterization. Do this by first using the parameterization of the curve to
find a Cartesian equation of the tangent line at P. Then using the function
y = 9₁(t) from part (a) for the y-coordinate function of the line, find an
expression for the x-coordinate function.
(d) Use your parameterizations from parts (a) and (c) to find simplified ex-
pressions (all in terms of only t and/or dt) for the following:
(i) the length of a differential rectangle (parallel to the x-aris) of the region
R described above in terms of the parameter t. Check that your expression is
dimensionally correct. Include a picture showing the region, the differential
rectangle, and the coordinates of the endpoints of the differential rectangle to
help with your explanation.
(ii) the width of the differential rectangle. Check that your expression is
dimensionally correct.
(iii) the area of the differential rectangle. Check that your expression is
dimensionally correct.
Transcribed Image Text:(a) Parameterize the curve with an equation of the form y = cr²/3, x ≥ 0, that passes through the point P in the first quadrant with coordinates (a, b). Choose a parameterization of the form £ = fi(t) = ktP y = 9₁ (t) = mt⁹, where k, m are constants that depend on a and b (but not c), and p, q are postive integers. Include a domain for your parameterization and verify that your parameterization is correct. (b) Suppose the coordinates x and y are measured in meters. What are the units of the parameter t in part (a)? Explain your reasoning. (c) Use the parameterization of the curve from part (a) to parameterize the tangent line to the curve at P. Be sure to include a domain for the parameterization. Do this by first using the parameterization of the curve to find a Cartesian equation of the tangent line at P. Then using the function y = 9₁(t) from part (a) for the y-coordinate function of the line, find an expression for the x-coordinate function. (d) Use your parameterizations from parts (a) and (c) to find simplified ex- pressions (all in terms of only t and/or dt) for the following: (i) the length of a differential rectangle (parallel to the x-aris) of the region R described above in terms of the parameter t. Check that your expression is dimensionally correct. Include a picture showing the region, the differential rectangle, and the coordinates of the endpoints of the differential rectangle to help with your explanation. (ii) the width of the differential rectangle. Check that your expression is dimensionally correct. (iii) the area of the differential rectangle. Check that your expression is dimensionally correct.
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