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if the equation x^(4)-4x^(3)+ax^(2)+bx+1...

if the equation `x^(4)-4x^(3)+ax^(2)+bx+1=0` has four positive roots, then find a.

A

roots are necessarily integers

B

`a+b= 2`

C

ab=-24

D

None of these

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KVPY PREVIOUS YEAR-MOCK TEST 5-EXERCISE
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  10. if the equation x^(4)-4x^(3)+ax^(2)+bx+1=0 has four positive roots, th...

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  11. If f(x)={(([x]-1)/(x-1), x ne 1),(0, x=1):} then f(x) is

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