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解简易方程的,1.4 3.2x3=23·6这道题怎么做

3.2x3-x=9 解:6.9-x=9 x=6.9-9 x=-2.1

(x十3.2)x3=9.6 解:去括号:x+3.2=3.2, 移向:x=3.2-3.2, x=0.

卡丹公式法 特殊型一元三次方程X^3+pX+q=0 (p、q∈R) 判别式Δ=(q/2)^2+(p/3)^3 【卡丹公式】 X⑴=(Y1)^(1/3)+(Y2)^(1/3) X⑵= (Y1)^(1/3)ω+(Y2)^(1/3)ω^2 X⑶=(Y1)^(1/3)ω^2+(Y2)^(1/3)ω 其中ω=(-1+i3^(1/2))/2;Y(1,2)=-(q/2)±((q/2)^2+(p/3)^3)^...

(x+0.6)x3.2=64 x+0.6=20 x=19.4 你好,很高兴为你解答,希望对你有所帮助,若满意请及时采纳。

2.6+1.4x3 =2.6+4.2 =6.8

48.3x3.2+6.8x48.3这道题怎样简算 48.3x3.2+6.8x48.3 =48.3*(3.2+6.8) =48.3*10 =483

增广矩阵= 2 2 -1 6 1 -2 4 3 5 7 1 28 r1-2r2,r3-5r2 0 6 -9 0 1 -2 4 3 0 17 -19 13 r3-3r1 0 6 -9 0 1 -2 4 3 0 -1 8 13 r1+6r3,r2-2r3,r3*(-1) 0 0 39 78 1 0 -12 -23 0 1 -8 -13 r1*(1/39),r2+12r1,r3+8r1 0 0 1 2 1 0 0 1 0 1 0 3 方程组...

解: 增广矩阵 = 2 7 3 1 6 3 5 2 2 4 9 4 1 7 2 r3-3r2,r2-r1 2 7 3 1 6 1 -2 -1 1 -2 0 -11 -5 1 -10 r1-2r2 0 11 5 -1 10 1 -2 -1 1 -2 0 -11 -5 1 -10 r3+r1,r1*(1/11),r2+2r1 0 1 5/11 -1/11 10/11 1 0 -1/11 9/11 -2/11 0 0 0 0 0 交换行 (...

(2十3一1)x6=24 6x2x(3一1)=24 (6十2)x3x1=24 (6十2)x3÷1=24 (6十2x1)x3=24 (6x1十2)x3=24

Ax = 0 的基础解系含向量的个数是 4-3 = 1. AX1 = b, AX2 = b,AX3 = b,AX4 = b, 则 A[(X1+X2)-(X2+X3)] = 0, (X1+X2)-(X2+X3) = (0, 1, -1, -1)^T 是 Ax = 0 的基础解系。 A[(X1+X2)/2] = b, (X1+X2)/2 = (1/2, 1/2, 0, 1)^T是 Ax = b 的解...

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