engineering recuitment NIELIT Scientific Assistant Mock Test 2025 Engineering Mathematics Calculus Fourier Series
Which one of the following is a Dirichlet condition?
1
\(\int\limits_{{t_1}}^\infty {\left| {x\left( t \right)} \right| < \infty } \)
2
Signal x(t) must have a finite number of maxima and minima in the expansion interval
3
x(t) can have an infinite number of finite discontinuities in the expansion interval
4
x2(t) must be absolutely summable