CLASS 12TH MATH CHAPTER 3 MATRIX (LECTURE 3)

Exercise 3B mein tum mainly yeh topics padhte ho: 1. Matrix Addition & Subtraction Same order (size) ki matrices ko add/subtract kaise karte hain Element-wise operation hota hai (har element ko individually add/subtract) 2. Scalar Multiplication Kisi matrix ko ek number (scalar) se multiply karna Har element us number se multiply hota hai 3. Matrix Multiplication Yeh thoda important aur tricky part hota hai Rule: Columns of first matrix = Rows of second matrix Row × Column method use hota hai 4. Properties of Matrix Multiplication Generally commutative nahi hota (A × B ≠ B × A) Associative hota hai: (A × B) × C = A × (B × C) Distributive property bhi hoti hai 5. Zero Matrix & Identity Matrix Zero matrix: sab elements 0 Identity matrix: diagonal par 1, baaki sab 0 Identity matrix multiplication mein 1 jaisa behave karta hai Class12Maths #Matrices #MathsChapter #CBSEMaths #MatrixAlgebra #MathsNotes #vairal #explore#upboardmaths