Step 1:

The equation is $\"\"$ and the interval $\"\"$ .

Consider $\"\"$ .

The function is $\"\"$ is continuous on the closed interval $\"\"$

Consider $\"\"$ then ,

$\"\"$

Consider $\"\"$ then ,

$\"\"$

It follows that $\"\"$ and $\"\"$ .

Therefore apply the intermediate theorem to state that there must be some $\"\"$ in $\"\"$ Such that $\"\"$ .

$\"\"$ has a zero in the closed interval $\"\"$

Solution:

$\"\"$ has a zero in the closed interval $\"\"$