The arithmetic mean (a) of two numbers (a and b) is given by the formula a=a+b/2 , and their geometric mean (g) is given by g=root ab . their harmonic mean (h) is given by the formula h=root ah . which formula correctly gives h in terms of a and b?

Hence, formula which  correctly gives H in terms of a and b is:

Step-by-step explanation:

If x1,x2,...xn are n observations then harmonic mean is given by:

 Here, we are given two observations a and b

Hence, harmonic mean is:

Hence, formula which  correctly gives H in terms of a and b is:

step-by-step explanation:

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step-by-step explanation: