清华大学出版社的《matlab7简明教程》的电子教案

				>> str2double('123.45e7')
				ans =
				  1.2345e+009
				>> str2double('123 + 45i')
				ans =
				  1.2300e+002 +4.5000e+001i
				>> str2double('3.14159')
				ans =
				    3.1416
				>> str2double('2.7i - 3.14')
				ans =
				  -3.1400 + 2.7000i
				>> str2double({'2.71' '3.1415'})
				ans =
				    2.7100    3.1415
				>> str2double('1,200.34')
				ans =
				  1.2003e+003
				>>