1.

Let LL′ be the latus rectum of y2=4ax and PP′ be a double ordinate drawn between the vertex and the latus rectum. If the area of trapezium PP′LL′ is maximum when the distance PP′ from the vertex is ak, then the value of k is

Answer» Let LL be the latus rectum of y2=4ax and PP be a double ordinate drawn between the vertex and the latus rectum. If the area of trapezium PPLL is maximum when the distance PP from the vertex is ak, then the value of k is


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