Consider the two curves C₁ : y² = 4x, C₂ : x² + y² - 6x + 1 = 0. Then,
C1:y2=4x(parabola)
C2:x2+y2−6x+1=0(circle)
Find: how C1 and C2 meet
C2:(x−3)2+y2=8
centre (3,0),radius =22
y2=4x:x2+4x−6x+1=0
x2−2x+1=0⇒(x−1)2=0
x=1 (double root)
y2=4⇒y=±2
Points of intersection: (1,2), (1,−2)
Parabola: y′=y2;Circle: y′=y3−x
At x=1: y2=y3−1=y2 ⇒common tangent
Slopes equal at (1,±2)⇒tangent at both
∴Option (2): touch exactly at two points