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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

click on the content to continue..

What does 'identical' mean?

• same; similar; alike
• same; similar; alike
• different; mismatch

The answer is 'same; similar; alike'

Consider the vector vec 0 = 0i+0j+0k. What will be the result of adding that with another vector vec a?

• -vec a
• |vec a|
• 0i+0j+0k
• same as vec a
• same as vec a

The answer is 'same as vec a'. The sum is identical to the vector being added.

The vector vec 0 = 0i+0j+0k is also known as .....

•  null or zero vector - Additive Identity.

Additive Identity: For any vector vec a in bbb V there exists a vec 0 in bbb V such that
vec a+vec 0=vec a

Solved Exercise Problem:

Consider vec p = 220i+310j-12i+15j. What will be the sum vec p + vec 0?

• vec p
• vec p
• 503ij
• 232i+325j
• -208i-325j

The answer is 'vec p'

slide-show version coming soon