Hello all ,
Is Cramer's Rule the best way to solve 2 complex equation on fx-991ES plus calculator?

 

What is your metric for "best"?

Given two methods, using Cramer's Rule on a FX-991ES calculator versus some other method, what would determine which method is better?

 

What is your metric for "best"?

Given two methods, using Cramer's Rule on a FX-991ES calculator versus some other method, what would determine which method is better?

yes , i need the best and fast way to do it

 

So when asked what your metric for "best" is you just regurgitate that you want the best. At least you did add "fast". But what is your metric for "fast"? The number of microseconds it takes to arrive at a solution after the data is entered? The amount of time it takes to enter the data? The amount of time it takes to figure out what the data is given the problem statement?

What is the context of the question you are asking? Why are you stipulating Cramer's Rule? Why are you stipulating a particular model of calculator (without, I might note, bothering to even mention what the make of the calculator is)?

You also don't indicate anything about the type of problems you are wanting to solve. There are lots of problems in which Cramer's Rule is very much NOT the "best" or "fastest" because the answers can be written down by inspection, or because they are so simple that it takes about as long to just solve them by hand as it does to enter the data into a calculator in order to have it do your thinking for you.