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Sir

Pl solve ques no 15

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Asked by shobhit 6th September 2018, 8:47 AM
Answered by Expert
Answer:
begin mathsize 18px style let space straight P space equals open parentheses straight x comma straight y close parentheses
straight A space equals space left parenthesis 1 comma 0 right parenthesis equals straight i with hat on top
straight B left parenthesis negative 1 comma 0 right parenthesis equals negative straight i with hat on top
PA with bar on top space equals left parenthesis 1 minus straight x right parenthesis straight i with hat on top minus straight y straight j with hat on top
open vertical bar PA with bar on top close vertical bar equals square root of blank end root
PB with bar on top space equals left parenthesis negative 1 minus straight x right parenthesis straight i with hat on top minus straight y straight j with hat on top
PA with bar on top space. PB with bar on top plus 3 space OA with bar on top space. OB with bar on top space equals 3
left parenthesis 1 minus straight x right parenthesis. left parenthesis negative 1 minus straight x right parenthesis plus open parentheses negative straight y close parentheses. open parentheses negative straight y close parentheses space equals 3
straight x squared plus straight y squared equals 4...... circle space radius space equals space 2
open vertical bar PA with bar on top close vertical bar equals square root of 5 minus 2 straight x end root
open vertical bar PB with bar on top close vertical bar equals square root of 5 minus 2 straight x end root
open vertical bar PA with bar on top close vertical bar. open vertical bar PB with bar on top close vertical bar equals 5 minus 2 straight x
now space straight x squared plus straight y squared equals 4...... circle space radius space equals space 2
so space max space value space of space straight x space is space 2 space and space min space value space is space minus 2
straight M equals when space straight x space equals negative 2
5 minus 2 open parentheses negative 2 close parentheses equals 9
straight m space equals space when space straight x space equals 2
5 minus 2 open parentheses 2 close parentheses equals 1
straight M squared minus straight m squared equals 9 squared minus 1 squared equals 80


end style
Answered by Expert 27th September 2018, 12:02 PM
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