1.

For given value of x, the number - 2/7, x, -7/2 are in G.P.?

Answer»

If - 2/7, x , - 7/2 are in G.P.

then, x2 = (-2/7)(-7/2) (By definition)

⇒ x2 = 1 ⇒ x = 1

∴ x = 1 or x = - 1

x2=(-2/7)(-7/2)

x=+1,-1.

for x is equal to -1 or 1, Given numbers are in G.P.



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