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Geometric sequence of positive terms in which its first term equal 4 times its third term and the sum of its second term ,fifth term is 36 ..Find The G.s .....
 one year ago
 one year ago
Geometric sequence of positive terms in which its first term equal 4 times its third term and the sum of its second term ,fifth term is 36 ..Find The G.s .....
 one year ago
 one year ago

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CerionaBest ResponseYou've already chosen the best response.1
so, if the terms are labled \[n _{1}\] for the first term \[n _{_{2}}\] for the second, and so on. Does \[n _{1} = 4n _{3} + n _{2}\] or\[n _{1} = 4(n _{3} + n _{2})\]
 one year ago

EyadBest ResponseYou've already chosen the best response.0
can't we say a=first term where a=4T3 ,a=4(ar^2)>(1) T2+T5=36 ,ar+ar^4=36 , ar(1+r^3)=36>(2) and deal with these two equations ?
 one year ago

CerionaBest ResponseYou've already chosen the best response.1
ok, so this is what I gotdw:1337900631418:dw
 one year ago

CerionaBest ResponseYou've already chosen the best response.1
Can you follow what I did, or is my writing a little to hard to read?
 one year ago

EyadBest ResponseYou've already chosen the best response.0
But how come the first term be fraction ,I think something is going wrong :/
 one year ago

CerionaBest ResponseYou've already chosen the best response.1
The first term isn't a fraction. The first term is "a" which is 64. "r" is the number we're multiplying each term by to get the next.
 one year ago

EyadBest ResponseYou've already chosen the best response.0
Oh,sry i read it wrong ,ty :)
 one year ago

CerionaBest ResponseYou've already chosen the best response.1
So first term is 64, second is 32, third is 16, fourth is 8, fifth is 4 ..... 4 * 16 = 64 (first term equal to 4 times third term) and 32 + 4 = 36 (second term plus fifth term equals 36). It fits both of the original equations.
 one year ago
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