Algebra
how to find coefficient of x^n in 1/(1-x)(1-2x)(1-3x) ans is ( 3^n+2-2^n+3+1)/2 sir pl explain the method
how to find coefficient of x^n in 1/(1-x)(1-2x)(1-3x) ans is ( 3^n+2-2^n+3+1)/2 sir pl explain the method
3 Answers
Nishant Vora
coefficient of x^n => Multiply the above and check x^n
man
thanhs to ans but i think its not easy to observe how will we explain to find coefficient by multiplication to a student sir
abhishek singh
in these kind of questions u can only multiply the coefficents , same kind of question came this year in iit advance paper 1,, integer type
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