JEE MATHEMATICS MCQ: QUADRATIC EQUATIONS

1 Easy

1 of 1

Application +4 | -1

a,c \ne 0

and

\alpha ,\beta

are the roots of the equation

a{x^2} + bx + c = 0

, then the quadratic equation with

1/\alpha

and

1/\beta

as its root is

View answer and explanation

Correct option: B

c{x^2} + bx + a = 0

Option B (

c{x^2} + bx + a = 0

) is correct because it represents the quadratic equation with roots that are reciprocals of the original roots.

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\alpha ,\;\beta

{x^2} - px + q = 0

{\alpha _1},{\beta _1}

{x^2} - qx + p = 0,

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{x^2} + 4ax + 2 > 0

x

a

f\left( x \right) = a{x^2} + bx + c\;

\;f\left( { - 1} \right) < 1,f\left( 1 \right) > - 1,f\left( 3 \right) < - 4\;

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9{x^2} - 18\left| x \right| + 5 = 0

f\left( x \right) = \log \left( {{x^2} - x - 2} \right)