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1 April, 10:20

Given that 1/f = 1/u + 1/v, express u in terms of v and f

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  1. 1 April, 12:05
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    u = fv / (v - f)

    Step-by-step explanation:

    1/f = 1/u + 1/v

    1/u = 1/f - 1/v = v/fv - f/fv = (v-f) / fv

    1/u = (v-f) / fv

    u = fv / (v - f)
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