Q. What is the center of the circle x2+y2−19y+26=0? Simplify any fractions. (□,□)
Rearrange equation: To find the center of the circle, we need to complete the square for both x and y. The given equation is x2+y2–19y+26=0. We start by rearranging the terms to group x and y terms together.Rearrange the equation:x2+(y2−19y)+26=0
Complete square for y: Next, we need to complete the square for the y terms. To do this, we take half of the coefficient of y, which is −219, and square it. This value is then added and subtracted inside the parentheses to complete the square.Complete the square for y:(y2−19y+(219)2)−(219)2+26=0(y2−19y+90.25)−90.25+26=0
Rewrite and simplify: Now we rewrite the equation with the completed square and simplify the constants on the right side of the equation.Rewrite and simplify:(x2)+(y−219)2=90.25−26(x2)+(y−219)2=64.25
Identify center: The equation now represents a circle in the standard form (x−h)2+(y−k)2=r2, where (h,k) is the center of the circle and r is the radius. From the equation (x2)+(y−219)2=64.25, we can see that h=0 and k=219.Identify the center:h=0k=219
Final answer: The center of the circle is at the point (h,k). Therefore, the center of the circle defined by the equation x2+y2–19y+26=0 is (0, rac{19}{2}).Final answer:Center of circle: (0, rac{19}{2})
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