Equipotential curves Consider the following potential functions and graphs of their equipotential curves. a. Find the associated gradient field F = ▿ ϕ. b. Show that the vector field is orthogonal to the equipotential curve at the point (1, 1) . Illustrate this result on the figure. c. Show that the vector field is orthogonal to the equipotential curve at all points ( x, y ). d. Sketch two flow curves representing F that are everywhere orthogonal to the equipotential curves. 38. ϕ ( x, y ) = x + y 2
Equipotential curves Consider the following potential functions and graphs of their equipotential curves. a. Find the associated gradient field F = ▿ ϕ. b. Show that the vector field is orthogonal to the equipotential curve at the point (1, 1) . Illustrate this result on the figure. c. Show that the vector field is orthogonal to the equipotential curve at all points ( x, y ). d. Sketch two flow curves representing F that are everywhere orthogonal to the equipotential curves. 38. ϕ ( x, y ) = x + y 2
Solution Summary: The author explains the gradient field for the potential function phi (x,y)=x+y2. The vector field is orthogonal to the equipotential curve.
Equipotential curves Consider the following potential functions and graphs of their equipotential curves.
a. Find the associated gradient fieldF= ▿ϕ.
b. Show that the vector field is orthogonal to the equipotential curve at the point (1, 1). Illustrate this result on the figure.
c. Show that the vector field is orthogonal to the equipotential curve at all points (x, y).
d. Sketch two flow curves representingF that are everywhere orthogonal to the equipotential curves.
38.ϕ (x, y) = x + y2
Quantities that have magnitude and direction but not position. Some examples of vectors are velocity, displacement, acceleration, and force. They are sometimes called Euclidean or spatial vectors.
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Example 1
Solve the following differential equations:
dy
dx
ex
= 3x²-6x+5
dy
dx
= 4,
y(0) = 3
x
dy
dx
33
= 5x3 +4
Prof. Robdera
5
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21. First-Order Constant-Coefficient Equations.
a. Substituting y = ert, find the auxiliary equation for the first-order linear
equation
ay+by = 0,
where a and b are constants with a 0.
b. Use the result of part (a) to find the general solution.
University Calculus: Early Transcendentals (4th Edition)
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