Rahul is brilliant in mathematics. He wants to improve his mathematical knowledge on nature of roots. He asks his teacher to give some questions on nature of roots of a quadratic equation. His teacher feels happy about rahul and give some questions on nature of roots to test his knowledge.
Based on this try to find the answer for the following:
1. Which of the following quadratic equation have equal roots.
2. The quadratic equation \(x^2+3x+1=0\) have
3. The value of \(k\) for which the roots are real and equal of the quadratic equation \(kx^2+4x+1=0\) is
4. If the quadratic equation \(2x^2+3x+m=0\) have real roots then which of the following is true?