Question: Please use plait in Racket, DO NOT USE #racket The following Tree datatype implements a binary tree with a number in each node and leaf:

Please use plait in Racket, DO NOT USE #racket

The following Tree datatype implements a binary tree with a number in each node and leaf: (define-type Tree (leaf [val : Number]) (node [val : Number] [left : Tree] [right : Tree]))

Implement the function negate, which takes a tree and returns a tree that has the same shape, but with all the numbers negated.

Example: (negate (node 5 (leaf 6) (leaf 7))) should produce (node -5 (leaf -6) (leaf -7)).

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