MATH 2310 Homework 1 Spring 2022
Hello, dear friend, you can consult us at any time if you have any questions, add WeChat: daixieit
MATH 2310
Homework 1
Spring 2022
1. Determine if the following statements are true or false.
(a) [2 pts] If a · b = a · c, and a is not the zero-vector (i.e. a 0), then b = c.
(b) [2 pts] If the vector a satisfies the equation a · b = 0 for all vectors b, then a is the zero-vector.
2. [3 pts] If a = ⟨2, − 1, 2⟩ and b = ⟨1, − 1, 2⟩, find a non-zero vector c such that a · c = b · c = 0.
3. [3 pts] Determine the projection vector proja(b) of b onto a where a = ⟨1, 2, 3⟩ and b = ⟨1, 2, 2⟩ .
4. [3 pts] If the scalar projection of b onto a is ∥proja(b)∥ = 1, determine the value of ∥proj2a(3b)∥ .
2022-02-10