If are in GP, then roots of are always |
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a) |
Real |
b) |
Real and negative |
c) |
Greater than one |
d) |
Non-real |
If are in GP, then roots of are always |
|||||||
a) |
Real |
b) |
Real and negative |
c) |
Greater than one |
d) |
Non-real |
(a)
Since, are in GP, then
…(i)
Given equation is .
Discriminant,
[from Eq. (i)]
Roots are real.