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determing if number is in row of matrix

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Filipa Cardoso
Filipa Cardoso 2018-4-18
回答： KSSV 2018-4-18
I have a matrix that represents an interval and i also have a number (x). the first column of the matrix represents the beginning of the interval and the second one represents the end. my goal is to determine if the x is between any of the numbers of the matrix. how can i do that?
matrix=[100 130;150 230; 250 270; 275 285; 290 315]
x= 225

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KSSV
KSSV 2018-4-18 
matrix=[100 130;150 230; 250 270; 275 285; 290 315] 
x= 225 ;

idx = matrix(:,1)<=x & matrix(:,2)>=x 
iwant = matrix(idx,:)

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