1.84-√(1.84^2-0.05^2)
=1.84-√1.84^2[1-(0.05/1.84)^2]
=1.84-1.84√[1-(0.05/1.84)^2]
=1.84-1.84*[1+(1/2)*(0.05/1.84)^2]
化简即得到结果.
1.84-√(1.84^2-0.05^2)
=1.84-√1.84^2[1-(0.05/1.84)^2]
=1.84-1.84√[1-(0.05/1.84)^2]
=1.84-1.84*[1+(1/2)*(0.05/1.84)^2]
化简即得到结果.