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P(x)=ax^3+bx^2+cx+d. P(x)<=1 for all x, mod(x)<=1. Thena. |a|+|b|+|c|+|d|<=7 b. |a|+|b|+|c|-|d|<=7c. |a|+|b|+|c|-|d|>=7 d. |a|+|b|+|c|+|d|>=7Pls explain.

Shyama P , 12 Years ago
Grade 12
anser 2 Answers
ishwar lohar

Last Activity: 12 Years ago

take x=1

then P(x) becomes

a+b+c+d-1<=0

Take

a=1

b=2

c=3

d=5

check the options which satisfy above values.

we get ans B.

Shyama P

Last Activity: 12 Years ago

But when,

a=1

b=2

c=3

d=5

a+b+c+d-1<=0 is violated ?

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