The time it would take to find the determinant of a matrix using the Gaussian Elimination is many-many orders less than when the cofactor method is used. In this blog, we derive the formula for a typical amount of computational time it would take to find the determinant of a nxn matrix using the forward elimination part of the Naive Gauss Elimination method. The time is compared with that using the cofactor method.
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The Numerical Methods Guy 
Hi,
I’ve been trying to improve my maths skills and have been doing numerical reasoning tests. Can you recommend any good sites to improve my skills? I’ve been doing ones on sites like this http://www.practiceaptitudetests.com/ but I’d like some harder ones. What would you recommend?
Thanks
Andrew
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