1.

IfP=(1/(X_p),p),Q=P=(1/(X_q),q),R=(1/(x^r),r) " where " x_k ne 0, " dentoes the " k^th term of H.p. for k in N, then

Answer»

AREA of `DeltaPQR=((p^2q^2r^2)/2)SQRT((p-q)^2+(q-R)^2+(r-p)^2))`
`DeltaPQR` is a right angled triangle.
The points P,Q,R are collinear
`DeltaPQR` is EQUILATERAL triangle

Answer :C


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