For the question 7 you have to equate the discriminant to zero for the equation to have real and equal roots. Hence,
where,
.Substitute values a, b, and c into the above equation and solve for k. Hope that helped.
Sunday, December 5, 2010
Review Questions
To solve question 3b, you have to factor sin theta and solve. There is a mistake in the answer key. The correct answer to that question is 180, 228 and 360 degrees.
For the question 7 you have to equate the discriminant to zero for the equation to have real and equal roots. Hence,
where,
.
Substitute values a, b, and c into the above equation and solve for k. Hope that helped.
For the question 7 you have to equate the discriminant to zero for the equation to have real and equal roots. Hence,
where,.Substitute values a, b, and c into the above equation and solve for k. Hope that helped.
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