![if \: the \: harmonic \: mean \: of \: a \: and \: b \: is \: ({a}^{n + 1} + {b}^{n + 1} ) \div {a}^{n} + {b}^{n}.then \: the \: value \: of \: n \: is if \: the \: harmonic \: mean \: of \: a \: and \: b \: is \: ({a}^{n + 1} + {b}^{n + 1} ) \div {a}^{n} + {b}^{n}.then \: the \: value \: of \: n \: is](https://tex.z-dn.net/?f=if+%5C%3A+the+%5C%3A+harmonic+%5C%3A+mean+%5C%3A+of+%5C%3A+a+%5C%3A+and+%5C%3A+b+%5C%3A+is+%5C%3A++%28%7Ba%7D%5E%7Bn+%2B+1%7D++%2B++%7Bb%7D%5E%7Bn+%2B+1%7D+%29+%5Cdiv++%7Ba%7D%5E%7Bn%7D+%2B++%7Bb%7D%5E%7Bn%7D.then+%5C%3A+the+%5C%3A+value+%5C%3A+of+%5C%3A+n+%5C%3A+is)
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