![SOLVED: Problem 1: Use the guidelines we have discussed in the videos to sketch by hand the curve f(x) arctan (e") (Use sign charts for f' and f", find the intervals where SOLVED: Problem 1: Use the guidelines we have discussed in the videos to sketch by hand the curve f(x) arctan (e") (Use sign charts for f' and f", find the intervals where](https://cdn.numerade.com/ask_images/34b115f2c81f4edc927469e71947f786.jpg)
SOLVED: Problem 1: Use the guidelines we have discussed in the videos to sketch by hand the curve f(x) arctan (e") (Use sign charts for f' and f", find the intervals where
Dave Richeson on Twitter: "Euler proved that π/4=arctan(1/2)+arctan(1/3), which can be used for computing digits of π (using the arctangent series). I wondered if I could prove it without using a trig
![How to Calculate \(\pi\): Machin's Inverse Tangents, A Mini-Primary Source Project for Calculus 2 Students How to Calculate \(\pi\): Machin's Inverse Tangents, A Mini-Primary Source Project for Calculus 2 Students](https://www.maa.org/sites/default/files/images/upload_library/46/Barnett_TRIUMPHS_MiniPSPs/Digits_of_Pi_Graph.jpg)
How to Calculate \(\pi\): Machin's Inverse Tangents, A Mini-Primary Source Project for Calculus 2 Students
![SOLVED: Compute the smaller angle between the hands of the clock at 3.45 PM: 157.58 144.5" 148.58 154.5" Find the value of x if arctan 3 arctan 2 Find the value of SOLVED: Compute the smaller angle between the hands of the clock at 3.45 PM: 157.58 144.5" 148.58 154.5" Find the value of x if arctan 3 arctan 2 Find the value of](https://cdn.numerade.com/ask_images/f11ae9b3c5a440e89f49da66074e0122.jpg)