Latest TCS Aptitude Question SOLUTION: If P x ax4 bx3 cx2 dx e has roots at x 1 2 3 4

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If P x ax4 bx3 cx2 dx e has roots at x 1 2 3 4

Asked In TCS meghana (10 years ago)

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Radhika  (10 years ago)

couldnt understand the question. can anybody explain along with the answer?

Is this solution Helpfull? Yes (11) | No   

aditya  (10 years ago)

48

if 1 is a root then x-1 is a factor of p(x)
similarly x-2 is a factor,x-3 ,x-4 are factors

but p(x) is 4th degree polynomial therefore it can be in the form

p(x) = k(x-1)(x-2)(x-3)(x-4) , where k is a constant

but given p(0) =48

therefore 24 k =48

k=2

p(x) =2(x-1)(x-2)(x-3)(x-4)

p(5)= 2*4*3*2*1 = 48

Is this solution Helpfull? Yes (9) | No (1)  

Roopa Gnanashekar  (10 years ago)

i could not understand the above solution. can anyone pls explain this answer?

Is this solution Helpfull? Yes (2) | No   

PARVY GOVIL  (10 years ago)

kindly provide the complete questions .

Is this solution Helpfull? Yes (2) | No (1)  

K.Y.S.Phaneendra  (10 years ago)

I am not able to understand the question properly...

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