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Q.

If p(x) be a polynomial of degree three that has local maximum value ‘8’ at x = 1 and local minimum value 4 at 

x = 2 then p(0) is equal to 

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a

-24 

b

6

c

12

d

-12

answer is D.

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Detailed Solution

p1(x)=a(x1)(x2)=a(x23x+2) 
I. O. B. S
p (x)=a[x333x22+2x]+b  
p (1) = 8 p (2) = 4
5a + 6b = 48 2a + 3b = 12
a = 24, b = -12
p(0) = b = - 12
 

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