The three functions are $\"\"$ , $\"\"$ , and $\"\"$ .

(a)

Complete the table.

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(b) Relation between $\"\"$ and $\"\"$ .

Observe the table, $\"\"$ .

$\"\"$ is the sum of $\"\"$ and $\"\"$ .

(c) Prove $\"\"$ algebraically.

$\"\"$

$\"\"$ .

(a)

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(b)

$\"\"$ is the sum of $\"\"$ and $\"\"$ .

(c) $\"\"$ .