1.56/0.3*(0.74-0.58)简算?

1.56/0.3*(0.74-0.58)简算? 1.56＋0.74＝? 0.58-0.65×0.3 0.58-0.65×0.3简便运算 2.8*(1.2/0.3-0.58)+15.8*0.28=?简便方法 65×2+1.56×3×5分之4-50分之9）×0.3÷0.5 用matlab拟合下面三组数据的三条曲线n=0:1:20q=[0.78,0.59,0.79,0.80,0.70,0.58,0.77,0.56,0.64,0.77,0.74,0.66,0.67,0.60,0.67,0.74,0.60,0.66,0.60,0.80;... 0.49,0.76,0.75,0.75,0.80,0.64,0.70,0.77,0.51,0.59,0.61,0.73,0.55,0.68,0.52,0.74,0.76 当x=1.6时,0.58+0.6x（）1.63 当x=0.6时,x+0.3x()55％ 当X=1.6时,0.58+0.6X=（ ）当X=0.6时,X+0.3X=（　　　　　　　　　　） 0.58×95 0.58平方根 6.4+0.74+3.7+0. 1.56-1.3+2.44-0.3怎么简便还有100-99+98-97+……+24-23+22-21 这类题有什么秘诀吗 1.56*6.8+2.4*1.56+9.2*0.44 1.56-1.56*0.8怎样简算 40÷1.56×40÷1.56等于 4.83-1.56+0.17-2.44 简算:4.08-1.56-0.44