P(x)=ax^3+bx^2+cx+d. P(x)<=1 for all x, mod(x)<=1. Then

a. |a|+|b|+|c|+|d|<=7 b. |a|+|b|+|c|-|d|<=7

c. |a|+|b|+|c|-|d|>=7 d. |a|+|b|+|c|+|d|>=7

Pls explain.

Shyama P , 13 Years ago

Grade 12