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matlab如何控制数值精度6 Z) E# Q" j8 Z" W: z
, t" {( p% l& L' v( m; [% vpa函数,控制数值精度,a=3.14159......,取vpa(a,5)后,输出为3.1416 a=pi;
1 R. |# z& c: c7 c" s1 M U! @& g. Nvpa(a,5); %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % round函数,将数据进行四舍五入 ! r# y( M# Q" k. E2 x' n
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round(pi) %输出为3 round(-1.9) %输出为-2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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