For the following exercises, consider points P ( − 1 , 3 ) , Q ( 1 , 5 ) , and R ( − 3 , 7 ) . Determine the requested vectors and express each of them a. in component form and b. by using the standard unit vectors. 5. P Q → + P R →
For the following exercises, consider points P ( − 1 , 3 ) , Q ( 1 , 5 ) , and R ( − 3 , 7 ) . Determine the requested vectors and express each of them a. in component form and b. by using the standard unit vectors. 5. P Q → + P R →
For the following exercises, consider points
P
(
−
1
,
3
)
,
Q
(
1
,
5
)
, and
R
(
−
3
,
7
)
. Determine the requested vectors and express each of them a. in component form and b. by using the standard unit vectors.
5.
P
Q
→
+
P
R
→
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.
T. Determine the least common
denominator and the domain for the
2x-3
10
problem:
+
x²+6x+8
x²+x-12
3
2x
2. Add:
+
Simplify and
5x+10 x²-2x-8
state the domain.
7
3. Add/Subtract:
x+2 1
+
x+6
2x+2 4
Simplify and state the domain.
x+1
4
4. Subtract:
-
Simplify
3x-3
x²-3x+2
and state the domain.
1
15
3x-5
5. Add/Subtract:
+
2
2x-14
x²-7x
Simplify and state the domain.
Q.1) Classify the following statements as a true or false statements:
Q
a. A simple ring R is simple as a right R-module.
b. Every ideal of ZZ is small ideal.
very den to is lovaginz
c. A nontrivial direct summand of a module cannot be large or small submodule.
d. The sum of a finite family of small submodules of a module M is small in M.
e. The direct product of a finite family of projective modules is projective
f. The sum of a finite family of large submodules of a module M is large in M.
g. Zz contains no minimal submodules.
h. Qz has no minimal and no maximal submodules.
i. Every divisible Z-module is injective.
j. Every projective module is a free module.
a homomorp
cements
Q.4) Give an example and explain your claim in each case:
a) A module M which has a largest proper submodule, is directly indecomposable.
b) A free subset of a module.
c) A finite free module.
d) A module contains no a direct summand.
e) A short split exact sequence of modules.
1 2
21. For the matrix A
=
3 4
find AT (the transpose of A).
22. Determine whether the vector
@
1
3
2
is perpendicular to
-6
3
2
23. If v1
=
(2)
3
and v2 =
compute V1 V2 (dot product).
.