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Grade: 12th pass

                        

Let f(x) = x 2 + ax + b, where a, b R. If f(x) = 0 has all its roots imaginary, then the roots of f(x) + f' (x) + f" (x) = 0 are (a) Real and distinct (b) Imaginary (c) Equal (d) Rational and equal

5 years ago

Answers : (1)

Phani
51 Points
							
(b) imaginary
for f(x)=0
as roots r imaginary a2
f(x)+f1(x)+f11(x)=0
here discrimiant will be negative (a2-4b-2a-4)
5 years ago
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