Find the incorrect relation from the figure

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SUMMARY

The discussion centers on a vector analysis problem where the user derived the equation C vector - D vector = -A vector but received feedback indicating it was incorrect. Participants suggest that the question may contain a typo, implying it should ask for the correct option instead. The consensus is that only option (i) is correct based on the vector relationships presented. This indicates potential flaws in computerized testing systems that may mislabel correct answers.

PREREQUISITES
  • Understanding of vector operations and notation
  • Familiarity with vector direction and magnitude
  • Basic knowledge of linear algebra concepts
  • Experience with multiple-choice testing formats
NEXT STEPS
  • Review vector addition and subtraction principles
  • Study common pitfalls in computerized testing systems
  • Explore linear algebra textbooks for deeper insights on vector relationships
  • Investigate error-checking methods in educational software
USEFUL FOR

Students studying physics or mathematics, educators designing vector-related assessments, and developers of educational software seeking to improve testing accuracy.

Dhaneshragu
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Homework Statement
Find the incorrect relation from the figure given below. ( figure given down)
Relevant Equations
Vector sum.
I tried making B vector in direction of D vector with a minus sign and after doing so I got the answer C vector - D vector= -A vector. But it's given as incorrect. I don't know why. Please explain how other options are correct.
15547802048611743369482713455288.jpg
 
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Dhaneshragu said:
I tried making B vector in direction of D vector with a minus sign and after doing so I got the answer C vector - D vector= -A vector. But it's given as incorrect. I don't know why. Please explain how other options View attachment 241554are correct.
Looks to me like a typo in the question. It should be asking for the correct option, and as you found that is (i).
 
Based on the way you drew the arrows, I concur with you that only answer (i) is correct. Is this a computerized test/homework where you are selecting multiple choice? So you were supposed to select the incorrect ones...is that what you did? I have seen these computerized tests coded wit the wrong answer before.
 

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