Question

Find the unit vector of 3i+4j-k

Answer 1

Answer:

of the form ˆu=u|u|:

of the form ˆu=u|u|:⇒ˆu=3i+4j−k|3i+4j−k|

of the form ˆu=u|u|:⇒ˆu=3i+4j−k|3i+4j−k|⇒ˆu=3i+4j−k√32+42+(−1)2

of the form ˆu=u|u|:⇒ˆu=3i+4j−k|3i+4j−k|⇒ˆu=3i+4j−k√32+42+(−1)2⇒ˆu=3i+4j−k√9+16+1

of the form ˆu=u|u|:⇒ˆu=3i+4j−k|3i+4j−k|⇒ˆu=3i+4j−k√32+42+(−1)2⇒ˆu=3i+4j−k√9+16+1⇒ˆu=3i+4j−k√26