Vector Subtraction Homework Help

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Vector subtraction can be understood as adding the opposite of a vector, expressed mathematically as a + (-b) = a - b. The confusion arises in distinguishing between the operations, with the correct formula for vector subtraction being r = t - s, rather than r = s - t. The triangle method illustrates that when vectors are added, the resultant vector can be represented as r + s = t. This visual approach helps clarify the relationship between the vectors involved in subtraction. Understanding these principles is essential for solving vector subtraction problems accurately.
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Homework Statement


vector subtraction


Homework Equations


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The Attempt at a Solution


I'm really confused when it comes to subtraction, the following problems seems like an addition problem and i thought it was r+s=t, but i got it wrong. Any help would be gladly appreciated.
 

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You can think the subtraction the vector b from a as addition of the opposite of b, (-b) to a: a+b= a+(-b)

ehild
 
i think i got it, is it r=s-t?
 
No, r=t-s. If you use the triangle method for addition you see from the figure that r+s=t. So r=t-s.

ehild
 

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