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

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shubhamsrg
 4 years ago
Best ResponseYou've already chosen the best response.2whats your progress so far ?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0i have to solve it back wards......

shubhamsrg
 4 years ago
Best ResponseYou've already chosen the best response.2yep.. you'll have to prove (ab)(cd)=(bc)^2 using ac=b^2

shubhamsrg
 4 years ago
Best ResponseYou've already chosen the best response.2and ad=c^2 ,also ad=bc

shubhamsrg
 4 years ago
Best ResponseYou've already chosen the best response.2its upside down,,please readjust..

shubhamsrg
 4 years ago
Best ResponseYou've already chosen the best response.2anyways,,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

shubhamsrg
 4 years ago
Best ResponseYou've already chosen the best response.2you have to prove LHS = RHS start with any, say LHS

shubhamsrg
 4 years ago
Best ResponseYou've already chosen the best response.2substitute b^2 = ac c^2 = bd

shubhamsrg
 4 years ago
Best ResponseYou've already chosen the best response.2also we know bc=ad so 2bc = bc + ad make these substitutions and there it is..
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