![Proof – The Derivative of f(x)=arctan(x): d/dx[arctan(x)] | Math Help from Arithmetic through Calculus and beyond Proof – The Derivative of f(x)=arctan(x): d/dx[arctan(x)] | Math Help from Arithmetic through Calculus and beyond](http://img.youtube.com/vi/5L_yZx1aOiw/0.jpg)
Proof – The Derivative of f(x)=arctan(x): d/dx[arctan(x)] | Math Help from Arithmetic through Calculus and beyond
![How do I calculate the integral of (1/4)(x)arctan(x/4)? I tried integrating by parts by could not arrive at the same answer as online calculators. I am getting 2 ln while the calculator How do I calculate the integral of (1/4)(x)arctan(x/4)? I tried integrating by parts by could not arrive at the same answer as online calculators. I am getting 2 ln while the calculator](https://preview.redd.it/g7279q9f97881.png?width=606&format=png&auto=webp&s=8c79f401951d7148990e1017034fbfb09366732e)
How do I calculate the integral of (1/4)(x)arctan(x/4)? I tried integrating by parts by could not arrive at the same answer as online calculators. I am getting 2 ln while the calculator
![SOLVED: A1 (20 minutes) Let a,x €e IR,a # 0. Calculate the derivative of x2 +a Xv2+a f(x) = In 4a V2 xl a Xv2 +a a Xv2 arctan 2 a V2 SOLVED: A1 (20 minutes) Let a,x €e IR,a # 0. Calculate the derivative of x2 +a Xv2+a f(x) = In 4a V2 xl a Xv2 +a a Xv2 arctan 2 a V2](https://cdn.numerade.com/ask_images/472d7b103ad848e1acf28a28d3d2605f.jpg)