Linear Algebra Questions Exam Practice


There are four questions and they are attached below.write neatly and clearly. Thank you

Linear Algebra (MTH-SHU 140) Homework 5
The Lecturer
Instructions. Please write down your answers in details.
Let R denote the set of real numbers.
1. Are the following sets vectors spaces? Justify your answers.
(1) V = f(x; y) j x
(2) f(x; y) j xy
0; y
(3) A subset V of Rn containing 0:
(4) All polynomials of the form ax2 ; where a 2 R:
(5) The set of all polynomials with integers as coe¢ cients.
2. Determine whether the following sets are bases of R3 . Give proofs.
3. Two vector spaces V; W are called isomorphic if there is a bijective linear map T : V ! W:
4. Is the following each statement true or false? If false, write F and give counter examples. If
true, write T and give brief explainations.

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