Question

De as coordenadas do centro e o raio das circunferencias :

a) (x-5)²+(y-4)²=1 ?
b) (x-2)²+y²=4
c) x²+y²=10
d) x²+(y+4)²=1

Answer 1

Olá!!!

Resolução!!

a)

( x - 5 )² + ( y - 4 )² = 1

( x - xc )² + ( y - yc )² = R²

C ( 5, 4 ) e R = 1

b)

( x - 2 )² + y² = 4

( x - xc )² + ( y - yc )² = R²

( x - 2 )² + ( y - 0 )² = 2²

C ( 2, 0 ) e R = 2

c)

x² + y² = 10

( x - xc )² + ( y - yc )² = R²

( x - 0 )² + ( y - 0 )² = √10

C ( 0, 0 ) e R = √10

d)

x² + ( y + 10 )² = 1

( x - xc )² + ( y - yc )² = 1

( x - 0 )² + ( y - ( - 10 ))² = 1

C ( 0, - 10 ) e R = 1

Espero ter ajudado;;