4d7racqmqx
4d7racqmqx
22-10-2021
Mathematics
contestada
help with#14 please!!!
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DᴀʀᴋPᴀʀᴀᴅᴏx
DᴀʀᴋPᴀʀᴀᴅᴏx
22-10-2021
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
Question
: 14
let's solve for f :
[tex] \dfrac{1}{f} = \dfrac{1}{a} + \dfrac{1}{b} [/tex]
[tex] \dfrac{1}{f} = \dfrac{b + a}{ab} [/tex]
Taking reciprocal of both sides :
[tex]f = \dfrac{ab}{a + b} [/tex]
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