If px^2+qx+r=0 has no real roots and p, q, r are real such that p+r>0 then

JEE Advanced Mathematics question

If has no real roots and are real such that then

(A)
(B)Correct
(C)
(D)all of these

Answer: (B)

Solution

Let . Having no real roots, never vanishes, so (being continuous) it keeps one sign for all real ; that sign is the sign of and also of (the behaviour for large

See the full step-by-step solution

Create a free account to read the complete working (3 steps), and practise questions like this in a timed test.

Create a free account

Question ID VK-108023