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9 years, 8 months ago
px^2-(p-1)x+2p=0, find its range
9 years, 8 months ago
Hi Nishank,
To find the range of p, we have to equate discrominant>=0
(p-1)^2-4*2p*p>=0
7p^2+2p-1<=0
(-1-2root2)/7<=p<=(-1+2root2)/7
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