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manan bhavsar Grade: 12
        

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

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

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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Badiuddin

7 years ago
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