JoanCarmelCavsidn
Answered

Suriin ang IDNStudy.com para sa detalyadong mga sagot sa iyong mga tanong. Tuklasin ang mga kumpletong sagot sa iyong mga tanong mula sa aming komunidad ng mga eksperto.

Write the quadratic equation with integer coefficents whose roots are the reciprocal of the roots of 2x^2-3x+1=0...

Sagot :

2x² - 3x + 1 = 0

A)  Solve for the roots.  Solve by factoring:
      2x² - 3x + 1 = 0
      (2x - 1) (x - 1) = 0
      2x - 1 = 0                        x - 1 = 0
      2x - 1 + 1 = 0 + 1            x - 1 + 1 = 0 + 1
      2x = 1                              x₂ = 1
      2x/2 = 1/2                         
      x₁ = 1/2

The roots and their reciprocals are:
x₁ = 1/2        Reciprocal:  x₁ = 2/1  or 2
x₂ = 1           Reciprocal:  x₂ = 1

B) Quadratic equation given the reciprocal of the roots of the first equation:
     x₁ = 2        x₂ = 1

x² - (sum of roots)x + (product of roots) = 0

x² - [(2) + (1)]x + [(2)(1)] = 0

x² - 3x + 2 = 0

ANSWER:  x² - 3x + 2 = 0