Equation of a line normal to f(x) = \({\left( {{\rm{x\;}} + {\rm{\;}}4} \right)^{\frac{1}{2}}} + 1\;\) at Q (0, 3) is

Equation of a line normal to f(x) = \({\left( {{\rm{x\;}} + {\rm{\;}}4

1.	Equation of a line normal to f(x) = \({\left( {{\rm{x\;}} + {\rm{\;}}4} \right)^{\frac{1}{2}}} + 1\;\) at Q (0, 3) is
A.	y = 3 – 4x
B.	y = 3 + 4x
C.	4y = 12 - x
D.	4y = 12 + x
Answer» B. y = 3 + 4x

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Equation of a line normal to f(x) = \({\left( {{\rm{x\;}} + {\rm{\;}}4} \right)^{\frac{1}{2}}} + 1\;\) at Q (0, 3) is

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