I'd like help with all of the first exercise, and then the two last parts of the last two exercises, 'cause I've done the first parts.
Hope that made sense.
Thanks in advance (:
Find the equation of the normal line to
at the point
First we want the value of the slope of the tangent line at this point. So:
At x = 1 this is
Now, the line normal to the curve at this point has a slope of
So it has the form
We know this line passes through the point , so
Thus the normal line is