Type of Function Counting of Functions (One-One,Onto,Bijective)| UP TGT/PGT/LT Grade|Jitendra Yadav
Автор: Infinity Classes
Загружено: 2025-12-23
Просмотров: 60
Hello Future Teachers !
Welcome back to Infinity Classes. Yeh Function chapter ka Lecture 2 hai.
Aaj ke is video mein hum Types of Functions ko detail mein samjhenge aur sabse important topic cover karenge - Counting of Functions (Total Number of Functions nikalne ki Short Tricks).
Agar aap UP TGT, PGT, LT Grade, GIC Lecturer, DSSSB ya kisi bhi teaching exam ki taiyari kar rahe hain, toh yeh video aapke liye "Must Watch" hai kyunki is topic se direct sawal aate hain.
📝 Topics Covered in This Video:
✅ Types of Functions:
• One-One (Injective) & Many-One
• Onto (Surjective) & Into
• Bijective Functions
✅ Methods to Check: Horizontal Line Test.
✅ Counting of Functions (Most Important):
• Total number of Functions from Set A to Set B.
• Number of One-One Functions (Formula & Logic).
• Number of Onto Functions (Short Trick).
• Number of Bijective Functions.
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