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If f1, f2 and f3 are the fundamental fre...

If `f_1, f_2 and f_3` are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequency `f_0` of the whole string is

A

`(1)/(v)=(1)/(v_1) + (1)/(v_2) + (1)/(v_3)`

B

`(1)/(sqrt(v))=(1)/(sqrt(v_1)) + (1)/(sqrt(v_2)) + (1)/(sqrt(v_3))`

C

`sqrt(v)=sqrt(v_1) + sqrt(v_2)+sqrt(v_3)`

D

`v=v_1+v_2+v_3`

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A
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