Matrix multiplication mein AB exists jab columns of A equal to rows of B hain. Lekin BA ke liye, columns of B should equal rows of A, jo often nahi hota. Isliye BA may not exist. CBSE class 10 wale kabhi 3x3 matrices ke multiplication ya inverse ke tough questions nahi puchte — unka syllabus surface level tak rehta hai.
Yeh main isliye keh raha hoon kyunki kal raat factory ke outdated accounts software ke saath struggle karte hue mera dimaag chakkar gaya tha... usme bhi ek specific order follow karna padta hai, warna result aata hi nahi.
#exams#study
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