If (\alpha=4+\sqrt{15}) and (\beta=4-\sqrt{15}), what is the value of (\frac{\alpha}{\beta}+\frac{\beta}{\alpha})?
Answer and explanation
Correct answer: (62)
Here (\alpha+\beta=8) and (\alpha\beta=1), so (\frac{\alpha}{\beta}+\frac{\beta}{\alpha}=\frac{\alpha^2+\beta^2}{\alpha\beta}=\frac{64-2}{1}=62). In such questions, first find the sum and product.
Frequently asked questions
What is the correct answer to this question?
(62)
Why is this the correct answer?
Here (\alpha+\beta=8) and (\alpha\beta=1), so (\frac{\alpha}{\beta}+\frac{\beta}{\alpha}=\frac{\alpha^2+\beta^2}{\alpha\beta}=\frac{64-2}{1}=62). In such questions, first find the sum and product.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Irrational numbers and real numbers.
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