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If n∑r=0f(r)=A and ∣∣∣∣∣2rb2(2n−1)ac2(n+1)a3rx3n−1∣∣∣∣∣=f(r)where (a,b,c,x are rational numbers). Then the value of A is |
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Answer» If n∑r=0f(r)=A and ∣∣ ∣ ∣∣2rb2(2n−1)ac2(n+1)a3rx3n−1∣∣ ∣ ∣∣=f(r) where (a,b,c,x are rational numbers). Then the value of A is |
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