Understanding By Design

in point-slope form. for the line tangent to the curve at the point ( 1, 2). (e) The point (1, ½ ) also lies on the graph of 4x2 + 4y2 = . Could you use the formula for f′(x) you derived in (c) to find the slope of the tangent line at (1, ½ ) even though this point is not on the graph of y = f(x)? Explain why or why not. ................
................