Matlab/Octave Tutorial

Approach when limit depends on direction•>> value_left = limit(tan(x),x,pi/2,'left'),•>> value_right = limit(tan(x),x,pi/2,'right')•Conclusions?•MATLAB's numeric engine gives a finite, albeit verylarge, value. Big mistakes could result if this wereused in subsequent calculations.•The symbolic engine gives both values correctly, butto get them you must add the additional argumenttelling MATLAB from which direction to approach thelimit ('left' beginning with smaller values of x andincreasing to the limit, and 'right' beginning with largervalues of x and decreasing to the limit.142