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lindsaypre0644
28.06.2019 •
Mathematics
Let f = (z − y) i + (x − z) j + (y − x) k . let c be the rectangle of width 2 and length 5 centered at (7, 7, 7) on the plane x + y + z = 21, oriented clockwise when viewed from the origin. (a) find curlf . curlf = ⟨2,2,2⟩ (b) use stokes' theorem to find f · dr c . f · dr c = −60 √3
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Ответ:
I suppose the rectangle's width and length refer to the dimensions of the rectangle that the plane
projects onto the
plane, so that
and
, or equivalently
and
.
The part of the plane bounded by
can be parameterized by
with the bounds on
and
listed above. Call this surface
. Take the normal vector to
to be
a. Your answer for the curl is correct,
.
b. By Stokes' theorem,
Ответ:
Hello,
Answer A
Yes, as long as each number in the Pythagorean triple is multiplied by the same whole number.
Step-by-step explanation:
(a,b,c) is a Pythagorien triple : c²=a²+b²
and k is a naturel.