Write the length of the intercept made oy the circle x2+Y2+2x−4y−5=0
on y-axis.
x2+9+2x−4y−5=0Putx=0y2−4y−5=0y2−5y+(y−5)=0y(y−5)+(y−5)=0(y−5)(y+1)=0y=5,−1
Thus, circle cuts y - axis at (0, 5) and (0, -1)
so Length of intercept on y-axis by circle = 5 + 1 = 6 units.