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Thought-Process to Discover Knowledge

Welcome to nubtrek.

Books and other education websites provide "matter-of-fact" knowledge. Instead, nubtrek provides a thought-process to discover knowledge.

In each of the topic, the outline of the thought-process, for that topic, is provided for learners and educators.

Read in the blogs more about the unique learning experience at nubtrek.
mathsProperties of Vector ArithmeticsProperties of Vector Addition

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What does 'Associate' mean?

• to connect with; to join
• to connect with; to join
• not to connect

The answer is 'to connect with; to join'

•  Person A associates the middle vector with first vector and, to the result of that, he adds the third vector (vec a + vec b) + vec c
•  Person B associates the middle vector with third vector and to that she adds the first vector vec a + (vec b + vec c) Will the two persons get different results?

• They will get different results
• They will get identical results
• They will get identical results

The answer is 'They will get identical results'. Considering that the components of vectors are real numbers, the order of additions does not change the result of addition.

•  Order of addition can be changed - associative.

Associative Property of Vector Addition: Any vectors vec a, vec b, vec c in bbb V,
(vec a+vec b)+vec c
quad quad = vec a + (vec b + vec c)

Solved Exercise Problem:

Which of the following equals vec x + vec y + vec x?

• vec x + vec y
• vec x + vec x + vec y
• vec x + vec x + vec y
• vec y + vec x
• vec y + vec y + vec x

The answer is 'vec x + vec x + vec y'

slide-show version coming soon