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the coefficient of the x^12 in the product of (1+x^3)/(1-x^2)(1-x) and (1-x+x^2) is

the coefficient of the x^12 in the product of (1+x^3)/(1-x^2)(1-x) and (1-x+x^2) is

Grade:12

1 Answers

Badiuddin askIITians.ismu Expert
148 Points
12 years ago

Dear manan

(1+x3)(1-x+x^2) /(1-x2)(1-x)

=(1+x3)2/(1-x2)2

=(1+x3)2(1-x2)-2

 

coeffient of x12 = coeffient of X0 in first bracket * coeffient of X12 in second bracket

                               +coeffient of X6 in first bracket * coeffient of X6 in second bracket

                               +coeffient of X12 in first bracket * coeffient of X0in second bracket

  calculete it  and put the value

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