A এবং B এর মধ্যে কোন কোণের জন্য, `|A+B| = | AB`।

A + B = 60, AB = 40, (A) / (B) =?

When A.B =-|A||B|, then

If, A and B be two matrices such that AB = A and BA=B. Then. Which of the following statements are correct ? 1. A^(2)=A 2. B^(2)=B 3. (AB)^(2)=AB

If A = [ (a , b) , (-b , a)] and B = [ (a , b),(b , a)] , find AB .

If A and B are two matrices such that AB=B and BA=A then A^2+B^2= (A) 2AB (B) 2BA (C) A+B (D) AB

If AB = A and BA = B then B'A'= A' and A'B' = B' and hence prove that A' and B' are idempotent.

If A and B are square matrices such that AB = BA then prove that A^(3)-B^(3)=(A-B) (A^(2)+AB+B^(2)) .

If A and B are two matrices such that A+B =AB , then

If A & B are two rational numbers and AB, A + B and A -B are rational numbers, then A/B is :