The arithmetic mean of any two nonnegative real numbers a and b is greater than or equal to their geometric mean vab. [Hint: consider (Va - vb) 0.]

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Answer with explanation:

Here, a and b are two real numbers.

Arithmetic Mean of a and b

          [tex]A=\frac{a+b}{2}[/tex]

[tex]\rightarrow a< \frac{a+b}{2}<b[/tex]

Geometric Mean of a and b

         [tex]G=\sqrt{ab}[/tex]

[tex]\rightarrow a< \sqrt{ab}<b[/tex]

[tex]A-G\\\\=\frac{a+b}{2}-\sqrt{ab}\\\\=\frac{a+b-2\sqrt{ab}}{2}\\\\=[\frac{\sqrt{a}-\sqrt{b}}{\sqrt{2}}]^2>0\\\\A-G>0\\\\A>G[/tex]

Square of difference of any two numbers is greater than or equal to 0.

A.M of two Numbers > G.M of two Numbers