MENU
Question -

Construct a quadratic in x such that A.M. of its roots is A and G.M. is G.



Answer -

Let the root of thequadratic equation be a and b.

So, according to thegiven condition,

A.M = (a+b)/2 = A

a + b = 2A ….. (1)

GM = √ab = G

ab = G2…(2)

The quadratic equationis given by,

x– x (Sumof roots) + (Product of roots) = 0

x2 – x (2A)+ (G2) = 0

x2 –2Ax + G2 = 0 [Using (1) and (2)]

The requiredquadratic equation is x2 – 2Ax + G2 =0.

Comment(S)

Show all Coment

Leave a Comment

Free - Previous Years Question Papers
Any questions? Ask us!
×