Home » Make R the subject of the fomula S = (sqrt{frac{2R + T}{2RT}})

Make R the subject of the fomula S = (sqrt{frac{2R + T}{2RT}})

Make R the subject of the fomula S = (sqrt{frac{2R + T}{2RT}})

  • A.
    R = (frac{T}{(TS^2 + 1)})
  • B.
    R = (frac{T}{2(TS^2 – 2)})
  • C.
    R = (frac{T}{2(TS^2 + 1)})
  • D.
    R = (frac{R}{2(TS^2 + 1)})
Correct Answer: Option B
Explanation

S = (sqrt{frac{2R + T}{2RT}})

Squaring both sides, 

(S^{2} = frac{2R + T}{2RT})

(S^{2} (2RT) = 2R + T)

(2S^{2} RT – 2R = T)

(R = frac{T}{2TS^{2}  – 2})

= (frac{T}{2(TS^{2} – 1)}