00:01
Today we are going to be finding the equation of a line that is tangent to the curve, the square root of x, at the point 1 -1.
00:07
I have provided the equation for the slope of this line, which is the limit as x approaches a of f of f of a, all divided by x minus a -in.
00:16
In this case, 1 will be a.
00:19
We'll go ahead and plug in for this equation.
00:23
The limit as x approaches 1 of the square root of x minus a square root of 1, divided by x minus 1.
00:33
This is equivalent to the limit as x approaches 1, square root of x minus 1 over x minus 1.
00:42
Now we're going to factor at the bottom, the denominator of this, x minus 1.
00:47
So this will stay as limit as x approach as 1, and the top will stay as x minus 1.
00:54
Over the bottom, we will factor in the square root of x plus 1 times the square root of x minus 1...