For k β \(\N\), let 0 = t0 < t1 < β― < tk < tk+1 = 1. A function f : [0,1] β β is said to be piecewise linear with nodes t1, β¦ ,tk, if for each j = 1, 2, β¦ , k + 1, there exist aj β β, bj β β such that
f(t) = aj + bjt for tj-1 < t < tj.
Let V be the real vector space of all real valued continuous piecewise linear functions on [0,1] with nodes \(\frac{1}{4},\frac{1}{2},\frac{3}{4}\) . Then, the dimension of V equals ______________