I need to put this in Matlab but I don't know I should put this in if you could show me how to put the equation in thanks

Question3 Stirling's approximation for large factorials is given by n! -V2Tn Use this formula to calculate 18! and call it the approxVal. Use MATLAB's built in factorial function and call it the trueVal. Compare the results by calculating the error as Error- (rueVal You will receive 1 point for each variable (approxVal, trueVal, and Error) that you find correctly. (3 points) (trueVal-approaVal) trueVal