User:Akhil999in/sandbox

OctaveFEMM
To get OctaveFEMM running correctly, the directory with the OctaveFEMM .m files must first be added to Octave's search path. If yours is a typical Wine installation, the correct directory can be added by using following at the Octave command line:

Examples

 * Polynomials and trigonometric functions

In order to calculate


 * $$I=\int x\cos (x) \,dx\,,$$

let:
 * $$u = x \Rightarrow d u = dx$$
 * $$dv = \cos(x)\,dx \Rightarrow v = \int\cos(x)\,dx = \sin x$$

then:



\begin{align} \int x\cos (x) \,dx & = \int u \, dv \\ & = uv - \int v \, du \\ & = x\sin (x) - \int \sin (x) \,dx \\ & = x\sin (x) + \cos (x) + C, \end{align} \!$$