# GATE Mechanical 2014 Set 1 | Question: 19

In exponential smoothening method, which one of the following is true?

1. $0 \leq \alpha \leq 1$ and high value of $\alpha$ is used for stable demand
2. $0 \leq \alpha \leq 1$ and high value of $α$ is used for unstable demand
3. $\alpha \geq 1$ and high value of $\alpha$ is used for stable demand
4. $\alpha \geq 0$ and high value of $\alpha$ is used for unstable demand

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