Question

Find the value of a if
2x + ay - 3x +2y 1-0 Represents
a
circle and also find it radius​

Answer 1

Answer:

Given equation to represents a circle, coefficient of x

2and y 2

must be same i.e. a=2

So the given equation becomes

2x 2+2y 2−3x+2y−1=0⇒x 2+y 2− 23

x+y− 21=0

Comparing with general equation of circle, g=−

43

,f= 21

,c=− 21

Hence radius = g 2+f2−c= 169+41 + 21= 421

Step-by-step explanation:

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