Problem 546. Is A the inverse of B?

Created by Bruce Raine

Solve Later

Given a matrix A and a matrix B, is A the inverse of B?

>>A=[2,4;3,5];

>>B=[-2.5,2;1.5,-1];

>>isInverse(A,B)

ans = 1

Solve

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919 Solutions
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Last Solution submitted on Jan 14, 2020

Last 200 Solutions

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3 Comments

3 Comments

Kuifeng on 27 Apr 2012

Need to improve the test suites.

Richard Zapor on 20 May 2012

Test of [1 1;1 1] for x and y would break current best solution

Vishal on 16 Sep 2014

Test suite not proper

Solution Comments

Solution 1394730

1 Comment

1 Comment

Anil Sarode on 26 Dec 2017

the matrix are given in the problem statement is A,B but function take x
and y and return answer in y that is bit confusing ,any how just use logic A*B^-1=I .

Solution 507820

1 Comment

1 Comment

santosh singh on 3 Oct 2014

really too disgusting prb use isequal(fix(B),round(inv(A)))
or y=true

Solution 145941

1 Comment

1 Comment

Sourabh on 12 Sep 2013

Solution 99769

1 Comment

1 Comment

Freddy on 18 Jun 2012

"credit should goes to matlab's built-in function not to programmer" - parvez mh

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Problem 546. Is A the inverse of B?

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Problem 546. Is A the inverse of B?

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Last 200 Solutions

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