+0  
 
0
239
2
avatar+956 

 

Would it be -7 ? 

 May 5, 2018
 #1
avatar+94545 
+2

I think heureka answered this here :

 

https://web2.0calc.com/questions/correct#r2

 

cool cool cool

 May 5, 2018
 #2
avatar+7347 
+1

The vector in the opposite direction of  \(\vec u\)  is  \(-\vec u\)  .

 

The unit vector in the same direction of  \(\vec u\)  is  \(\frac{\vec u}{|\vec u|}\)  which is  \(\frac{\vec u}{7}\)  .

 

So the unit vector in the opposite direction of  \(\vec u\)  is  \(-\frac{\vec u}{7}\)  .

 May 6, 2018

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