$\"\"$

The differential equation is $\"\"$ .

The function is $\"\"$ .

Differentiate on each side with respect to $\"\"$ .

$\"\"$

Power rule of derivative: $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

The differential equation is $\"\"$ .

Consider $\"\"$ .

Substitute $\"\"$ and $\"\"$ in the equation.

$\"\"$

The function does not satisfies the differential equation $\"\"$ .

$\"\"$ is not a solution of the differential equation.

$\"\"$

Not a solution.