Question: 3. Write a structurally recursive function named (tree? exp) that takes one argument, which can be any Racket expression. (tree? exp) returns true if exp

3. Write a structurally recursive function named (tree? exp) that takes

3. Write a structurally recursive function named (tree? exp) that takes one argument, which can be any Racket expression. (tree? exp) returns true if exp is a bin-tree as defined for Problem 2, and false otherwise. For example: This is your second type predicate. Follow the datatype for this problem! Simple structural recursion is your friend

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