Discussion on Matrices And Determinants


 

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Posted on: 10:14:03 PM on July 16, 2017
Posted By:
Mannava Saketh
How to find inverse of a matriix quickly,please tell .


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Posted on: 10:14:56 PM on July 16, 2017
Please tell fast



Posted on: 03:35:30 PM on March 26, 2018
You may know how to quickly find the adjoint of a matrix ... So A¹ (inverse) is found by 1/|A| × (adj A) if you dont know how to find adjoint quickly , then here it is if A = [A¹¹ A¹²] [A²¹ A²²].... Then its adjoint is ( adj A ) = [A²² -A¹²] [-A²¹ A¹¹] ... i.e. change the sign of A¹² and A²¹ ... NOTE : this method is only for 2×2 matrix



Posted on: 11:05:47 PM on March 26, 2018
As jktg1990 use the formula Find adjoint by normal method





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