(i) Equation of the curve
Now value of at (0, 5)
At (say)
Slope of the normal at (0, 5) is
Equation of the tangent at (0, 5) is
And Equation of the normal at (0, 5) is
(ii) Equation of the curve
Now value of at (1, 3)
At (say)
Slope of the normal at (1, 3) is
Equation of the tangent at (1, 3) is
And Equation of the normal at (1, 3) is