For the following exercises, find the measure 0f the angle between the three-dimensional vectors a and b . Express the answer in radians rounded to two decimal places, if it is not possible to express it exactly. 139. [ T ] a = 3 i − j − 2 k , b = v + w , where v = − 2 i − 3 j + 2 k and w = i + 2 k
For the following exercises, find the measure 0f the angle between the three-dimensional vectors a and b . Express the answer in radians rounded to two decimal places, if it is not possible to express it exactly. 139. [ T ] a = 3 i − j − 2 k , b = v + w , where v = − 2 i − 3 j + 2 k and w = i + 2 k
For the following exercises, find the measure 0f the angle between the three-dimensional vectors
a
and
b
. Express the answer in radians rounded to two decimal places, if it is not possible to express it exactly.
139.
[
T
]
a
=
3
i
−
j
−
2
k
,
b
=
v
+
w
,
where
v
=
−
2
i
−
3
j
+
2
k
and
w
=
i
+
2
k
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.
Q2: Using the Laplace transform, find the solution for the following equation
y"" +y" = 6et + 6t + 6. Suppose zero initial conditions (y"" (0) = y"(0) = y'(0) = y(0) = 0).
1- Let A = {A1, A2, ...), in which A, A, = 0, when i j.
a) Is A a π-system? If not, which element(s) should be added to A to become a π-system?
b) Prove that σ(A) consists of the finite or countable unions of elements of A; i.c., A E σ(A) if and
only if there exists finite or countable sequence {n} such that A = U₁An (Hint: Let F be such
class; prove that F is a σ-filed containing A.)
c) Let p ≥ 0 be a sequence of non-negative real numbers with Σip₁ = 1. Using p₁'s, how do you
construct a probability measure on σ(A)? (Hint: use extension theorem.)
2- Construct an example for which P(lim sup A,) = 1 and P(lim inf An) = 0.
3. Let
f(z) =
sin (22) + cos (T2)
2(22+1)(z+1)
Compute f(z)dz over each of the contours/closed curves C1, C2, C3 and C4 shown
below.
Don't use any Al tool
Don't send the same
previous answer that
was Al generated
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show ur answer
pe
n and paper then take
Send ur answer in pe
n and paper don't rep
uted ur self down