Math miscellaneousHard

Question

If a,b and c are in H.P and a,b and - 2c are in G.P., where a,b & c are non-zero, then -

Options

A.-2a,b and -2c are in A.P
B. = 0
C.- 2a,b and - 2c are in G.P
D. = (a + b + c)2

Solution

b = and b2 = - 2ac
⇒ b = ⇒ a + b + c = 0

Create a free account to view solution

View Solution Free
Topic: Math miscellaneous·Practice all Math miscellaneous questions

More Math miscellaneous Questions

Coefficient of x10 in the expansion of (1 + x)9 ln (1 + x), is (where |x|...If ω is a cube root of unity then is equal to :-...Let f(x) Then which one of the following is true?...If m is the A.M. of two distinct real numbers l and n(l, n > 1) and G1, G2 and G3 are three geometric means between l...If f(x) =...