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Grade 12Differential Calculus

What is the condition for a cubic equation of have three real roots??

Profile image of Aditya
10 Years agoGrade 12
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Profile image of Himanshu
ApprovedApproved Tutor Answer10 Years ago
For a cubic equation to have three real roots it should have one maxima and one minima and hence to find the conditions find critical points c1 c2 then used f(c1)f(c2)