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secondary 4 | E Maths
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Can someone please help me with all the parts of qns 14 asap? Sry for being a bit pushy, I'm rushing for time. I really appreciate it if you took the time to help me out :)
Date Posted: 3 years ago
Views: 245
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Part A) 2u
Reason:
DO=OA=u
DA=DO+OA=2u
Part B) v-u
Reason:
OA+AB=OB
u+AB=v
AB=v-u
Part C) v+u
Reason:
EO+OA=EA
EO=OB= v
Part D) v-2u
Reason:
OCAB is a rhombus hence OC=AB
OA=u
AO=-u
AC=AO+OC
AC= -u+(v-u)= v-2u
Don’t forget to put vector sign when necessary!
Reason:
DO=OA=u
DA=DO+OA=2u
Part B) v-u
Reason:
OA+AB=OB
u+AB=v
AB=v-u
Part C) v+u
Reason:
EO+OA=EA
EO=OB= v
Part D) v-2u
Reason:
OCAB is a rhombus hence OC=AB
OA=u
AO=-u
AC=AO+OC
AC= -u+(v-u)= v-2u
Don’t forget to put vector sign when necessary!
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