NDA 2025
- Exam
- NDA
- Year
- 2025
- Subject
- Mathematics
- Chapter
- Quadratic Equation
NDA 2025 · Mathematics · Quadratic Equation
For the following two (02) items: Let α and β be the roots of the...
For the following two (02) items:
Let and be the roots of the quadratic equation , where and . Further, .
What is the relation between and ?
Let and be the roots of the quadratic equation , where and . Further, .
What is the relation between and ?
Options
- A
- B
- C
- D
Correct answer
C.
Step-by-step solution
Let . We are given .
The given quadratic equation is:
Let the roots be and . Then:
We are given the relation:
Using the change of base formula, .
Thus, the relation becomes:
Substitute into the product of roots:
Since , we can divide by to get:
Assuming is a real root, we have .
Substitute into the sum of roots:
Now we can find the relation between and :
Thus, .
Answer:
The given quadratic equation is:
Let the roots be and . Then:
We are given the relation:
Using the change of base formula, .
Thus, the relation becomes:
Substitute into the product of roots:
Since , we can divide by to get:
Assuming is a real root, we have .
Substitute into the sum of roots:
Now we can find the relation between and :
Thus, .
Answer: