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If a b c and d are in G.P, prove that ab, bc , cd are in geometric prgrogression......
 one year ago
 one year ago
If a b c and d are in G.P, prove that ab, bc , cd are in geometric prgrogression......
 one year ago
 one year ago

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shubhamsrgBest ResponseYou've already chosen the best response.2
whats your progress so far ?
 one year ago

mujtabazarrarBest ResponseYou've already chosen the best response.0
i have to solve it back wards......
 one year ago

shubhamsrgBest ResponseYou've already chosen the best response.2
yep.. you'll have to prove (ab)(cd)=(bc)^2 using ac=b^2
 one year ago

shubhamsrgBest ResponseYou've already chosen the best response.2
and ad=c^2 ,also ad=bc
 one year ago

shubhamsrgBest ResponseYou've already chosen the best response.2
its upside down,,please readjust..
 one year ago

shubhamsrgBest ResponseYou've already chosen the best response.2
anyways,,i could read it,,and you'll done right till now..i'll write the last step here b^2 + c^2 2bc = ac+bdbcad
 one year ago

shubhamsrgBest ResponseYou've already chosen the best response.2
you have to prove LHS = RHS start with any, say LHS
 one year ago

shubhamsrgBest ResponseYou've already chosen the best response.2
substitute b^2 = ac c^2 = bd
 one year ago

shubhamsrgBest ResponseYou've already chosen the best response.2
also we know bc=ad so 2bc = bc + ad make these substitutions and there it is..
 one year ago
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