If the boundary conditions are not derivative then it is a sine fourier series
and if they are derivative it is a cosine fourier series
Is this correct?
Also how do you know which case to use when lambda is less than, equal to or more than?
If the boundary conditions are not derivative then it is a sine fourier series
and if they are derivative it is a cosine fourier series
Is this correct?
Also how do you know which case to use when lambda is less than, equal to or more than?