: MathCad root, polyroots, .
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I MathCad root
1. MathCad.
2. MathCad f(), .
3. , , f(). f() 0=0 (.. ).
4. f() 0, .
4.1. (.17, a) Trace (. 17,), Track Data Pont.
4.2. , , .. , -Value - Value, .
5. , f() 0. MathCad root(f(x), x) ( root , f() 0) 1.
6. (2) (3) f()=0 ( ), f() 0 root.
) )
17
MathCad polyroots, , , .
1. MathCad f(), .
2. v , .
3. , r:=polyroots(v), rT.
4. rT .
5. , , , .
MathCad .
1. .
2. Evaluaton () Ctrl + =.
3. .
4. , .
5. Symbolc/Varable/Solve.
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V mnerr(x1,...).
1. :=1.
2. gven (), .
3. , .
4. mnerr(x). .
1.1 1
[-1; 3] | x3-2,92x2+1,4355x+0,791=0 | |
[-2; 3] | x3-2,56x2-1,325x+4,395=0 | |
[-3,5; 2,5] | x3+2,84x2-5,606x-14,766=0 | |
[-2,5; 2,5] | x3+1,41x2-5,472x-7,38=0 |
.1.1
[-1,6; 1,1] | x3+0,85x2-0,432x+0,044=0 | ||
[-1,6; 1,6] | x3-0,12x2-1,478x+0,192=0 | ||
[-1,6; 0,8] | x3+0,77x2-0,251x-0,017=0 | ||
[-1,4; 1] | x3+0,88x2-0,3999x-0,0376=0 | ||
[-1,4; 2,5] | x3+0,78x2-0,827x-0,1467=0 | ||
[-2,6; 1,4] | x3+2,28x2-1,9347x-3,90757=0 | ||
[-2,6; 3,2] | x3-0,805x2-7x+2,77=0 | ||
[-3; 3] | x3-0,345x2-5,569x+3,15=0 | ||
[-2; 3,4] | x3-3,335x2-1,679x+8,05=0 | ||
[-1; 2,8] | x3-2,5x2+0,0099x+0,517=0 | ||
[-1,2; 3] | x3-3x2+0,569x+1,599=0 | ||
[-2,5; 2,5] | x3-2,2x2+0,82x+0,23=0 | ||
[-1,2; 4,6] | x3-5x2+0,903x+6,77=0 | ||
[-1; 7,4] | x3-7,5x2+0,499x+4,12=0 | ||
[-1.6; 9] | x3-7,8x2+0,899x+8,1=0 | ||
[-3,4; 2] | x3+2x2-4,9x-3,22=0 | ||
[-3,4; 1,2] | x3+3x2-0,939x-1,801=0 | ||
[-4,6; 3,0] | x3+5,3x2+0,6799x-13,17=0 | ||
[-2,4; 8,2] | x3-6,2x2-12,999x+11,1=0 | ||
[-3,2; 2,7] | x3-0,34x2-4,339x-0,09=0 | ||
[-1; 3] | x3-1,5x2+0,129x+0,07=0 | ||
[-1; 3] | x3-5,5x2+2,79x+0,11=0 | ||
[-1; 3] | x3-5,7x2-6,219x-2,03=0 | ||
[-1; 3] | x3-3,78x2-7,459x-4,13=0 | ||
[-1; 3] | x3-5x2-9,9119x+0,01=0 | ||
[-1; 3] | x3-7x2-1,339x-7,55=0 |
[-1, 1], 0.1.
1 :=-1, -0.9..1.
2 0 =0.
3 .
4 0 =0.
5 1, 2, 3. 1=-0.9, 2=0.2, 3= 0.7.
6 : root (f(x1),x1), root (f(x2),x2), root (f(x3),x3). : 1=-0.92, 2=0.21, 3= 0.721 (. 18).
18 root
II [-1.1, 7.1], 0.1.
1. , Matrix () (.19) .
19
2. r:= polyroots (v) rT, r, .
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3. :
4. . .
5. (. 20).
20 polyroots
III .
1.
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2. = 0.
3. .
4. MathCad Symbolic/Variable/ Solve.
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IV minerr (x 1,).
1. :=1.
2. given (), .
3. , .
4. minerr (x). .
5. , .
1 ?
2 ?