Let [math]

Graph [math] on a graphing device, and use the graph to estimate the following 4 values

[math]

[math]

[math]

[math]

Use symmetry to deduce the following 3 values

[math]

[math]

[math]

Use the above results to guess a formula for [math], then use the definition of derivative to prove that your guess is correct, enter the result below

[math]