HANAH STRIKES AGAIN!
To calculate the slope of a line tangent to
Use the symmetric difference quotient to determine
Expand the numerator.
Combine like terms.
Factor out an
Cancel out the
Evaluate the limit
.... this is .
Use this symmetric difference in your graphing calculator to graph
for for .
Graph that on your calculator. Also sketch the derivative function you found in part (a). The sketches should look a lot alike.