The function is and the point is
.
The slope of the tangent line is equal to the derivative of the given function at .
Consider .
Apply natural logarithm on each side.
\Apply power rule of natural logarithm : .
Differentiate the above equation with respect to .
Slope at the point :
Substitute the point in
.
Slope .
Point-slope form of a line equation .
Substitute the point and
in the above equation.
The tangent line equation is .
The tangent line equation is .