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June 3rd, 2013, 05:22 AM  #1 
Senior Member Joined: Sep 2011 Posts: 395 Thanks: 0  Circle Intersecting Axis
Based on the yintercepts I've found, adding them together would yield the correct answer, but this is not the difference between the values and, hence, not the length of the intercept. Can anyone help? Many thanks. Q. K is the circle . Find the length of the intercept the circle cuts off the yaxis. Attempt: Let Apply quadratic equation: +/\sqrt{(^24(1)(5)}}{2(1)}=\frac{8+/\sqrt{64+20}}{2}=\frac{8+/\sqrt{84}}{2}=4+/\sqrt{21}" /> Difference between y intercepts = length of intercept: Ans. (From text book): 8 
June 3rd, 2013, 06:12 AM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,211 Thanks: 521 Math Focus: Calculus/ODEs  Re: Circle Intersecting Axis
I agree with your interpretation and result.

June 3rd, 2013, 06:22 AM  #3 
Senior Member Joined: Sep 2011 Posts: 395 Thanks: 0  Re: Circle Intersecting Axis
Great! Thank you very much.


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axis, circle, intersecting 
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