Mathematics
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OpenStudy (anonymous):
Find the equation of the circle with center at (3, 2) and through the point (5, 4).
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OpenStudy (usukidoll):
ponies!!! :D
OpenStudy (anonymous):
hey! hot Rarity :D lol but i really need an answer
OpenStudy (usukidoll):
I only know part of it :(
OpenStudy (usukidoll):
I haven't touch this problem in eons x.x
OpenStudy (usukidoll):
x^2+y^2 = 1 is the default equation of the circle. the center is (0,0) and the radius is one.
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OpenStudy (usukidoll):
since the center is at 3,2 it's (x-3)^2+(y-2)^2
but to find the radius.. x.x.
OpenStudy (usukidoll):
D: arghhh don't use the math you lose the math sad bambi@!
OpenStudy (anonymous):
@Kainui
OpenStudy (usukidoll):
D: I can't help it if higher math courses only use some topics DKKKK
OpenStudy (usukidoll):
Elementary Linear Algebra had nothing to do with this D:
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OpenStudy (usukidoll):
this shows up again in Calculus III, but I had the simple questions x.x
OpenStudy (fifciol):
find radius
\[r^2= (x_b-x_a)^2+ (y_b-y_a)^2\]
OpenStudy (zzr0ck3r):
to find the radius
\[\sqrt{(5-3)^2(4-2)^2}=r\]
OpenStudy (zzr0ck3r):
so r = err add a plus
OpenStudy (zzr0ck3r):
\[\sqrt{(5-3)^2+(4-2)^2}=r\]
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OpenStudy (anonymous):
i got 6
OpenStudy (zzr0ck3r):
\[r=2\sqrt{2}\\so\\(x-3)^2+(2-y)^2=2\sqrt{2}\]
OpenStudy (fifciol):
nope, in equation of a circle is r^2
OpenStudy (fifciol):
so it schould be 8
OpenStudy (fifciol):
instead of 2sqrt2
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OpenStudy (zzr0ck3r):
\[(x-3)^2+(y-2)^2=(2\sqrt{2})^2=8\]
OpenStudy (zzr0ck3r):
sorry its late
OpenStudy (usukidoll):
DISTANCE FORMULA UGHHHHHHHHHH! *bangs head* of course! Use that and then square it... gawddd D((((
OpenStudy (anonymous):
so then the equation of a circle that passes through those points is...?
OpenStudy (zzr0ck3r):
\[(x-3)^2+(y-2)^2=8\]
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OpenStudy (usukidoll):
yuppppp |dw:1375347531188:dw|