Question

Which of the following is not Dirichlet’s condition for the Fourier series expansion?​

Answer 1

Step-by-step explanation:

The frequency of first term frequency of 2nd term is ω2 = 1. So, x(t) is a periodic or not periodic. Since function in (b) is non periodic. So does not satisfy Dirichlet conditionand cannot be expanded in Fourier series.

Answer 2

Step-by-step explanation:

Dirichlet's condition for Fourier series expansion is f(x) should be periodic, single valued and finite; f(x) should have finite number of discontinuities in one period and f(x) should have finite number of maxima and minima in a period.