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Home / Doubts and Solutions/ICSE/Class 12 Science/Mathematics

If A , B and AB are symmetric matrices, then show AB=BA

Asked by drawing13334 31st August 2018, 11:12 AM
Answered by Expert
Answer:
begin mathsize 18px style If space straight A space is space symmetric space matrix straight A apostrophe equals straight A so space open parentheses AB close parentheses apostrophe equals AB...........1 now space open parentheses AB close parentheses apostrophe equals straight B apostrophe straight A apostrophe straight A apostrophe equals straight A space and space straight B apostrophe equals straight B open parentheses AB close parentheses apostrophe equals BA............2 from space 1 space and space 2 AB equals BA end style
Answered by Expert 31st August 2018, 11:26 AM
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