Given = and = , find + . + = +
Given vec f = 7 vec i + 4 vec j and vec q = 5 vec i -7 vec j, find vec f + vec q. vec f + vec q = vec i + vec j
→f=7→i+4→j→q=5→i−7→j→f+→q=7→i+4→j+5→i−7→j→f+→q=7→i+5→i+4→j−7→j→f+→q=(7+5)→i+(4−7)→j→f+→q=12→i−3→j