Question: Animation maple

I am trying to animate on maple. I have two solutions 𝑢1(𝑥, 𝑎) = 𝑐𝑜𝑠(𝑥 − 2𝑎) and 𝑢2(𝑥, 𝑎) = 𝑐𝑜𝑠(𝑥 + 2𝑎), for 𝑎 ∈ [1,10], how do I animate them?

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