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Question
Make y the subject of formula W = `"pq" + (1)/(2)"wy"^2`
Solution
W = `"pq" + (1)/(2)"Wy"^2`
⇒ W - pq = `(1)/(2)"Wy"^2`
⇒ 2(W - pq) = Wy2
⇒ `(2("W" - "pq"))/"W"` = y2
⇒ Y = `sqrt((2("W" - "pq"))/"W"`.
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