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andre [41]
3 years ago
9

Help with#14 please!!!

Mathematics
1 answer:
Alisiya [41]3 years ago
7 0
<h3>▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪</h3><h3 /><h3><u>Question</u> : 14</h3>

let's solve for f :

  • \dfrac{1}{f}  =  \dfrac{1}{a}  +  \dfrac{1}{b}

  • \dfrac{1}{f}  =  \dfrac{b + a}{ab}

Taking reciprocal of both sides :

  • f =  \dfrac{ab}{a + b}
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