Question

If x, y and z are in G.P., then the relation between x, y and z can be:

Options

• y = x + z

• y = xz

• 2y = x + z

• $$y = \sqrt{xz}$$

Answer 1

`bb(y = sqrt(xz))`

Explanation: 

The general G.P. condition is $$y^2 = xz$$, which gives $$y = \sqrt{xz}$$ when the middle term is nonnegative.