3 and 4 .Determinants and Matrices
medium

निम्नलिखित कथनों में असत्य है

A

${A^2} - {B^2} = (A + B)(A - B)$

B

${({A^T})^T} = A$

C

${(AB)^n} = {A^n}{B^n},$जहाँ $A, B$ क्रमविनिमेय नियम का पालन करते हैं

D

$(A - I)(I + A) = O \Leftrightarrow {A^2} = I$

Solution

$(A + B)(A – B) = {A^2} – AB + BA – {B^2}$     

$\therefore$ विकल्प $(a)$ सत्य नहीं है।

Standard 12
Mathematics

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