In the formula `k=sqrt((n^(2)-1)/(n^(2)+1))`, make n the subject and find n if k=0.5.

In the formula S=(n)/(2)[2a+(n-1)d] , make a as the subject of the formula.

(a) In the formula t_(n)=[a+(n-1)d] , make 'n' as the subject. (b) find the value of n when t_(n)=92,a=1 and d=13 .

In the formula t_(n)=a(n-1)d , make n as the subject

If for n in N ,sum_(k=0)^(2n)(-1)^k(^(2n)C_k)^2=A , then find the value of sum_(k=0)^(2n)(-1)^k(k-2n)(^(2n)C_k)^2dot

If for n in N ,sum_(k=0)^(2n)(-1)^k(^(2n)C_k)^2=A , then find the value of sum_(k=0)^(2n)(-1)^k(k-2n)(^(2n)C_k)^2dot

If for n in N,sum_(k=0)^(2n)(-1)^(k)(2nC_(k))^(2)=A, then find the value of sum_(k=0)^(2n)(-1)^(k)(k-2n)(2nC_(k))^(2)