| ★ |  Linear and Non linear Systems | Types of sytems | Signals and systems | Lec-14 | Education 4u @education4uofficial | 253 | India | |
| 8 |  Mutually orthogonal functions in signals and systems | Problem -2 | approximating a signal | Lec -27 | Education 4u @education4uofficial | 629 | India | 95 |
| 1 |  orthogonal functions in signals and systems | Part-2 | Lec -25 | Education 4u @education4uofficial | 608 | India | 97 |
| 14 |  Signals operation | time shifting scaling and folding | Problems | Signals and Systems | Lec -20 | Education 4u @education4uofficial | 352 | India | 93 |
| 7 |  Energy and Power signals | Examples | Part-1/2 | Signals and Systems | Lec -18 | Education 4u @education4uofficial | 284 | India | 95 |
| 2 |  causal and Non causal Systems | Static & Dynamic | Types of sytems | Signals and systems | Lec-13 | Education 4u @education4uofficial | 277 | India | 96 |
| 9 |  Integrale nedefinite - Test, clasa a XII-a, Mate-info | | 221 | Rumanía | 94 |
| 4 |  analogy between vectors and signals | Part-2 /2 | Signals and Systems | Lec -22 | Education 4u @education4uofficial | 171 | India | 96 |
| 10 |  Testing of Hypothesis 5 | TLC Ramanujan College @tlcramanujancollege | 154 | India | 94 |
| 13 |  Correlation and Regression Analysis Part 4 | TLC Ramanujan College @tlcramanujancollege | 140 | India | 93 |
| 5 |  Logistic Regression ( Part -1) | TLC Ramanujan College @tlcramanujancollege | 137 | India | 95 |
| 17 |  Ecuatii exponentiale - Test, clasa a X-a (Tehnologic) | | 76 | Rumanía | 93 |
| 12 |  Solutie pentru problema de sambata dimineata (clasele 7+) | | 60 | Rumanía | 93 |
| 6 |  2009j46 | Jordi Lagares Roset @jordilagaresroset | 58 | — | 95 |
| 3 |  2010j43 | Jordi Lagares Roset @jordilagaresroset | 16 | — | 96 |
| 19 |  2011j13 | Jordi Lagares Roset @jordilagaresroset | 13 | — | 93 |
| 15 |  2010s22 | Jordi Lagares Roset @jordilagaresroset | 12 | — | 93 |
| 11 |  Función logaritmo | Sergio Ruiz @sergioruiz3165 | 0 | España | 94 |
| 16 |  Optimización dada la función objetivo | Sergio Ruiz @sergioruiz3165 | 0 | España | 93 |
| 18 |  Funciones, derivadas y límites selectividad Junio 2019 | Sergio Ruiz @sergioruiz3165 | 0 | España | 93 |
| 20 |  Problema Genética 11 | | 0 | — | 93 |