1.Let f(x)={x−1,x is even2x,x is oddf(x) = \begin{cases} x - 1, & x \text{ is even} \\ 2x, & x \text{ is odd} \end{cases}f(x)={x−1,2x,x is evenx is odd, x∈Nx \in \mathbb{N}x∈N. If for some a∈Na \in \mathbb{N}a∈N, f(f(f(a)))=21f(f(f(a))) = 21f(f(f(a)))=21, then limx→a−{xa−[xa]}\displaystyle \lim_{x \to a^-} \left\{ \frac{x}{a} - \left[ \frac{x}{a} \right] \right\}x→a−lim{ax−[ax]}, where [t][t][t] denotes the greatest integer less than or equal to ttt, is equal to:Login to continueOnly logged in users canattempt or see the solution.
