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If p ,q ,r are positive and are in A.P....

If `p ,q ,r` are positive and are in A.P., the roots of quadratic equation `p x^2+q x+r=0` are all real for a.`|r/p-7|geq4sqrt(3)` b. `|p/r-7|geq4sqrt(3)` c. all p and r d. no p and r

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Knowledge Check

  • The roots of the eqaution (q-r)x^(2)+(r-p)x+(p-q)=0 are

    A
    `(r-p)/(q-r),1`
    B
    `(p-q)/(q-r),1`
    C
    `(p-r)/(q-r),2`
    D
    `(q-r)/(p-q),2`

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