Let be a parabola, having its axis parallel to –axis, which is touched by the line at then |
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a) |
b) |
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c) |
d) |

Let be a parabola, having its axis parallel to –axis, which is touched by the line at then |
|||

a) |
b) |
||

c) |
d) |

1 Answer

127 votes

**(a)**

The general equation of a parabola having its axis parallel to -axis is

(i)

This is touched by the line at

Therefore, slope of the tangent at (1, 1) is 1 and, must have equal roots

and

and

Also, (1,1) lies on Eq.(i)

From and

Then from

127 votes

127