Q.

Statement 1 : The slope of the tangent at any point P on a parabola, whose axis is the axis of x and vertex is at the origin, is inversely proportional to the ordinate of the point P

Statement II : The system of parabola y2=4ax satisfies a differential equation of degree 1 and order 1

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a

Statement 1 and statement 2 are both true

b

Statement 1 is false and  statement 2 is true

c

Statement 1 and Statement 2 are both false

d

Statement 1 is true and 

statement 2 is false

answer is B.

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Detailed Solution

P=at2, 2at,  slope of tangent at P=1t

Clearly Statement 1 is true

Statement - 2:  Given parabola y2=4ax diff w.r.to x on both sides

                           2ydydx=4a 2ydydx=y2x     dydx=ydx

                        Degree 1, order 1

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Statement 1 : The slope of the tangent at any point P on a parabola, whose axis is the axis of x and vertex is at the origin, is inversely proportional to the ordinate of the point PStatement II : The system of parabola y2=4ax satisfies a differential equation of degree 1 and order 1