syms x; limit(sin(x)/x)

syms n;limit(n-1,n,nan,'left')

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n1 = int8(-128);

n2 = int8(-129);

n3 = uint8(-128);

The output of the above code is,

Statement 1- saveas is used to save command window text to file 

Statement 2- dairy is used to save command window text to file 

Statement 3- todiary is used to save command window text to file 

Statement 1- Histogram plot used to show comparisons of profit of 3 industries over 3 quarters 

Statement 2- Bar plot used to show comparisons of profit of 3 industries over 3 quarters 

Statement 3- frequency plot used to show comparisons of profit of 3 industries over 3 quarters