@XxFightinDirtyxX Do you see that (x-2)^2 on the left of the equation? That lets us know that the centerof the circle will be found where x = 2 (positive 2). And from that value, +2, I know that going to the right 9 units and to the left 9 units will the left and right edges. Why is that? Because of the # at the right of the equation, 81. I know that 81 is the radius^2, so the radius is the square root of that number, telling me to choose inputs of -7 and 11 to get edges. Let me know.
@XxFightinDirtyxX Negative 7 and 11 were two of the other numbers and I picked them because they give us the left and right edges of the circle. The remaining input value I used, 5, I just made up. I could have chosen a lot of different input values and still have had a good outline of a circle. Even though your comment was addressed to JosephJonLombardi, it seemed to be asked in my direction as the video author. Thanks for viewing and commenting.
@JosephJonLombardi At first I saw your comment and looked at the video and wondered how it was wrong, but then I put those values in my calculator again. Somehow in making the video, I drew a circle with an h = -2 instead of +2 so that circle shown is the wrong one as you said. It should be 4 units to the right and the top of it should be x=2 and y=6. Good call and sorry for the mistake. I hope it didn't cause you too much trouble. Thanks for viewing and commenting.
@gdawgrapper No problem. I am reviewing Algebra for the compass test to get into Calculus. I couldn't do the circle problems on the sample test. Your video reminded me how to do it, it was very helpful. Thank you!
@XxFightinDirtyxX Do you see that (x-2)^2 on the left of the equation? That lets us know that the centerof the circle will be found where x = 2 (positive 2). And from that value, +2, I know that going to the right 9 units and to the left 9 units will the left and right edges. Why is that? Because of the # at the right of the equation, 81. I know that 81 is the radius^2, so the radius is the square root of that number, telling me to choose inputs of -7 and 11 to get edges. Let me know.
gdawgrapper 2 months ago
@XxFightinDirtyxX Negative 7 and 11 were two of the other numbers and I picked them because they give us the left and right edges of the circle. The remaining input value I used, 5, I just made up. I could have chosen a lot of different input values and still have had a good outline of a circle. Even though your comment was addressed to JosephJonLombardi, it seemed to be asked in my direction as the video author. Thanks for viewing and commenting.
gdawgrapper 3 months ago
Dude, you did the first circle wrong when calculating on your calculator under conics after you hit trace key. you said x=-2, y=6. wrong
JosephJonLombardi 10 months ago
@JosephJonLombardi At first I saw your comment and looked at the video and wondered how it was wrong, but then I put those values in my calculator again. Somehow in making the video, I drew a circle with an h = -2 instead of +2 so that circle shown is the wrong one as you said. It should be 4 units to the right and the top of it should be x=2 and y=6. Good call and sorry for the mistake. I hope it didn't cause you too much trouble. Thanks for viewing and commenting.
gdawgrapper 10 months ago
@gdawgrapper No problem. I am reviewing Algebra for the compass test to get into Calculus. I couldn't do the circle problems on the sample test. Your video reminded me how to do it, it was very helpful. Thank you!
JosephJonLombardi 10 months ago
Thank for this insightful video, it was very much appreciated sir.
blupi151 11 months ago
Parabolas must be the simplest conic to graph... -_-'
Creamfan121 11 months ago
does andy mckee know you are using his music?!?!?!? lol
NateHail 1 year ago
thank you soooo much for the video! It really cleared some things up for me!
brooksjbennett 1 year ago
thanks for the video
robo2000nitro 1 year ago