aD³+bD+c=0 make D the subject of formulae
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Given : aD² + bD + c = 0
To Find : make D the subject of formulae
Solution:
subject of formulae is a variable which is expressed in terms of other variables / constants involved in the formula.
Subject of the formula is written on the L.H.S. of the equation.
Everything else goes on the right side of the equation.
Subject of formula can be evaluated by substituting for the values on the right hand side.
aD² + bD + c = 0
=> D = (- b ± √b² - 4ac ) / 2a
D = (- b ± √b² - 4ac ) / 2a
Here D is the subject of formulae
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