Q. 17 B5.0( 1 Vote )

Find the point on the curve at which the tangents are parallel to the y – axis.

Answer :

Since, the tangent is parallel to y – axis, its The Slope is not defined, then the normal is parallel to x – axis whose The Slope is zero.


i.e, = 0


= 0


= 0


y = 0


Substituting y = 0 in = 1,


= 1


x2 = 4


x = ±2


Thus, the required point is (2,0) & ( – 2,0)


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