$\"\"$

(a)

Find the solutions for $\"\"$ .

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

Observe the graph :

The two functions $\"\"$ and $\"\"$ touches each other at $\"\"$ .

The solution is $\"\"$ .

$\"\"$

(b)

Find the solutions for $\"\"$ .

Observe the graph.

The graph of $\"\"$ is above the graph of the function $\"\"$ for $\"\"$ .

The solution is $\"\"$ .

$\"\"$

(a) $\"\"$ .

(b) $\"\"$ .