Let F x , y , z be a nonzero vector field in 3-space whose component functions have continuous first partial derivatives, and assume that div F = 0 everywhere. If σ is any sphere in 3-space, explain why there are infinitely many points on σ at which F is tangent to the sphere.
Let F x , y , z be a nonzero vector field in 3-space whose component functions have continuous first partial derivatives, and assume that div F = 0 everywhere. If σ is any sphere in 3-space, explain why there are infinitely many points on σ at which F is tangent to the sphere.
Let
F
x
,
y
,
z
be a nonzero vector field in 3-space whose component functions have continuous first partial derivatives, and assume that
div F
=
0
everywhere. If
σ
is any sphere in 3-space, explain why there are infinitely many points on
σ
at which F is tangent to the sphere.
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.
3) If a is a positive number, what is the value of the following double integral?
2a
Love Lv
2ay-y²
.x2 + y2 dady
16. Solve each of the following equations for x.
(a) 42x+1 = 64
(b) 27-3815
(c) 92. 27² = 3-1
(d) log x + log(x - 21) = 2
(e) 3 = 14
(f) 2x+1 = 51-2x
11. Find the composition fog and gof for the following functions.
2
(a) f(x) = 2x+5, g(x) = x²
2
(b) f(x) = x²+x, g(x) = √√x
1
(c) f(x) = -1/2)
9
9(x) =
х
=
-
X
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