Give a formula F ( x , y ) = M(x, y) i + N(x, y) j for the vector field in a plane that has the properties that F = 0 at (0, 0) and that at any other point (a, b). F is tangent to circle x 2 + y 2 = a 2 + b 2 and points in the clockwise direction with magnitude | F | = a 2 + b 2 .
Give a formula F ( x , y ) = M(x, y) i + N(x, y) j for the vector field in a plane that has the properties that F = 0 at (0, 0) and that at any other point (a, b). F is tangent to circle x 2 + y 2 = a 2 + b 2 and points in the clockwise direction with magnitude | F | = a 2 + b 2 .
Give a formula F(x, y) = M(x, y)i + N(x, y)j for the vector field in a plane that has the properties that F = 0 at (0, 0) and that at any other point (a, b). F is tangent to circle x2+ y2 = a2 + b2and points in the clockwise direction with magnitude
|
F
|
=
a
2
+
b
2
.
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.
4. Let A {w, e, s, t, f, i, e, l, d, s, t, a, t, e}.
(a) How many different words (they do not have to make sense) can you spell with the letters in A?
(b) Is your answer from above the same as the cardinality of the powerset of A, i.e. of P(A)?
(c) What is |A|?
what can the answer be pls help
5. How many numbers can you make out of the digits 1, 2, 3, 4, 6 if the rule is that every digit has to be
larger than the digit preceding it? For example 124 is ok, 122 is not ok. Every digit can be used only
once, but you do not have to use every digit. A tree might help.
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