(u_n ) is a arithmetic sequence with u_0 =1 and
u_5 =11
1) find the value of S_n = Σ_(k=0) ^n (1/u_k ^2 )
and lim_(n→+∞) S_n
2) find the value of W_n = Σ_(k=1) ^n (1/(u_(k−1) . u_(k+1) ))
and lim_(n→+∞) W_n .
g(x)= 6x^2 − 5ax + b^2
given that g(x) has only two roots
and are (x−1) and (x−2)
find the value of a and b.Using
(x−1) as a root detemine the
extend to which (x−2) is a root
(occurance as a root).