Métodos Númericos Lineales

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contador a b Xr f(a) f(Xr) f(a)*f(Xr) Ea 1 1 2 1.5 -1 0.25 -0.25 2 1 1.5 1.25 -1 -0.4375 0.4375 20 3 1.25 1.5 1.375 -0.4375 -0.109375 0.0478516 9.0909090909 4 1.375 1.5 1.4375 -0.109375 0.0664063 -0.007263 4.347826087 5 1.375 1.4375 1.40625 -0.109375 -0.022461 0.0024567 2.2222222222 6 1.40625 1.4375 1.421875 -0.022461 0.0217285 -0.000488 1.0989010989 7 1.40625 1.421875 1.4140625 -0.022461 -0.000427 9.596E-06 0.5524861878 8 1.4140625 1.421875 1.41796875 -0.000427 0.0106354 -4.54E-06 0.2754820937 9 1.4140625 1.4179688 1.416015625 -0.000427 0.0051003 -2.18E-06 0.1379310345 10 1.4140625 1.4160156 1.4150390625 -0.000427 0.0023355 -9.98E-07 0.0690131125

Iteracion a b Xr f(a) f(xr) f(a)f(xr) 1 -2 -1 -1.5 -1.3 0.5 -0.65 2 -2 -1.5 -1.75 -1.3 -0.375 0.4875 3 -1.75 -1.5 -1.625 -0.375 0.06875 -0.02578125 4 -1.75 -1.625 -1.6875 -0.375 -0.1515625 0.056835938 5 -1.6875 -1.625 -1.65625 -0.1515625 -0.041015625 0.006216431 6 -1.65625 -1.625 -1.640625 -0.041015625 0.013964844 -0.000572777 7 -1.65625 -1.640625 -1.6484375 -0.041015625 -0.013500977 0.000553751 8 -1.6484375 -1.640625 -1.64453125 -0.013500977 0.000238037 -3.21E-06 9 -1.6484375 -1.64453125 -1.646484375 -0.013500977 -0.006629944 8.95E-05 10 -1.646484375 -1.64453125 -1.645507813 -0.006629944 -0.003195572 2.12E-05

Iteracion a b Xr f(a) f(xr) f(a)f(xr) 1 7 8 7.5 0.5 -1.3 -0.65 2 7 7.5 7.25 0.5 -0.375 -0.1875 3 7 7.25 7.125 0.5 0.06875 0.034375 4 7.125 7.25 7.1875 0.06875 -0.1515625 -0.010419922 5 7.125 7.1875 7.15625 0.06875 -0.041015625 -0.002819824 6 7.125 7.15625 7.140625 0.06875 0.013964844 0.000960083 7 7.140625 7.15625 7.1484375 0.013964844 -0.013500977 -0.000188539 8 7.140625 7.1484375 7.14453125 0.013964844 0.000238037 3.32E-06 9 7.14453125 7.1484375 7.146484375 0.000238037 -0.006629944 -1.58E-06 10 7.14453125 7.146484375 7.145507813 0.000238037 -0.003195572 -7.61E-07

Ea

X1

14.28571429 7.692307692 3.703703704 1.886792453 0.952380952 0.473933649 0.237529691 0.118623962 0.059347181

Ea 3.448275862 1.754385965 0.869565217 0.436681223 0.218818381 0.109289617 0.054674686 0.027329872 0.013666803

X2

Iteración Xl Xu 1 1 2 1.333333333 3 1.4 4 1.411764706 5 1.413793103 6 1.414141414 7 1.414201183 8 1.414211438 9 1.414213198 10 1.4142135

Xr f(Xl) f(Xu) 2 1.333333333 -1 2 1.4 -0.222222 2 1.411764706 -0.04 2 1.413793103 -0.00692 2 1.414141414 -0.001189 2 1.414201183 -0.000204 2 1.414211438 -3.5E-05 2 1.414213198 -6.01E-06 2 1.4142135 -1.03E-06 2 1.414213552 -1.77E-07

f(Xr) f(Xr)f(Xl) 2 -0.2222222222 0.222222222 2 -0.04 0.008888889 2 -0.0069204152 0.000276817 2 -0.0011890606 8.228793E-06 2 -0.0002040608 2.426407E-07 2 -3.501278E-05 7.144736E-09 2 -6.0072868E-06 2.103318E-10 2 -1.0306888E-06 6.191643E-12 2 -1.7683827E-07 1.822652E-13 2 -3.0340652E-08 5.365388E-15

Ea 4.761904762 0.833333333 0.143472023 0.024630542 0.004226364 0.000725142 0.000124415 2.134627E-05 3.662441E-06

iteración

xi 1 2 3 4 5 6 7 8 9

f(xi)

f'(xi)

2 2 4 1.5 0.25 3 1.4166666667 0.0069444444 2.83333333 1.4142156863 6.0073049E-06 2.82843137 1.4142135624 4.5106141E-12 2.82842712 1.4142135624 0 2.82842712 1.4142135624 0 2.82842712 1.4142135624 0 2.82842712 1.4142135624 0 2.82842712

xi+1

Ea 1.5 1.4166666667 33.3333333333 1.4142156863 5.8823529412 1.4142135624 0.1733102253 1.4142135624 0.0001501824 1.4142135624 1.1276404038267E-10 1.4142135624 0 1.4142135624 0 1.4142135624 0

Iteración

x1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

f(x) E% 1 0.367879441 171.828183 0.36787944 0.692200628 46.8536395 0.69220063 0.500473501 38.3091466 0.5004735 0.606243535 17.4467897 0.60624354 0.545395786 11.1566225 0.54539579 0.579612336 5.90335081 0.57961234 0.560115461 3.48086698 0.56011546 0.571143115 1.93080393 0.57114312 0.564879347 1.10886824 0.56487935 0.568428725 0.62441912 0.56842873 0.566414733 0.35556841 0.56641473 0.567556637 0.20119652 0.56755664 0.566908912 0.11425564 0.56690891 0.567276232 0.06475157 0.56727623 0.567067898 0.03673877 0.5670679 0.56718605 0.02083121 0.56718605 0.56711904 0.01181587 0.56711904 0.567157044 0.00670078 0.56715704 0.56713549 0.00380047 0.56713549 0.567147714 0.00215536 0.56714771 0.567140781 0.00122241 0.56714078 0.567144713 0.00069328 0.56714471 0.567142483 0.00039319 0.56714248 0.567143748 0.00022299 0.56714375 0.567143031 0.00012647 0.56714303 0.567143438 7.1726E-05 0.56714344 0.567143207 4.0679E-05 0.56714321 0.567143338 2.3071E-05 0.56714334 0.567143264 1.3085E-05 0.56714326 0.567143306 7.4208E-06 0.56714331 0.567143282 4.2087E-06 0.56714328 0.567143295 2.3869E-06 0.5671433 0.567143288 1.3537E-06

iteración

xi-1

xi

f(xi-1)

f(xi)

xi+1 Ea 1 1 2 -1 2 1.3333333333 2 2 1.3333333 2 -0.222222 1.4 4.76190476 3 1.3333333 1.4 -0.222222 -0.04 1.4146341463 1.03448276 4 1.4 1.4146341 -0.04 0.0011898 1.4142114385 0.02989 5 1.4146341 1.4142114 0.0011898 -6.01E-06 1.4142135621 0.00015016 6 1.4142114 1.4142136 -6.01E-06 -8.93E-10 1.4142135624 2.2329E-08 7 1.4142136 1.4142136 -8.93E-10 0 1.4142135624 0 8 1.4142136 1.4142136 0 0 #DIV/0! #DIV/0! 9 1.4142136 #DIV/0! 0 #DIV/0! #DIV/0! #DIV/0! 10 #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!

Bisección contador

a 1 2 3 4 5 6 7 8 9 10 11 12

b

0 0 0.25 0.25 0.3125 0.3125 0.328125 0.328125 0.33203125 0.33203125 0.33300781 0.33300781

1 0.5 0.5 0.375 0.375 0.34375 0.34375 0.3359375 0.3359375 0.33398438 0.33398438 0.33349609

Xr 0.5 0.25 0.375 0.3125 0.34375 0.328125 0.3359375 0.33203125 0.33398438 0.33300781 0.33349609 0.33325195

f(a) -2 -2 -0.46875 -0.46875 -0.1176758 -0.1176758 -0.0294876 -0.0294876 -0.0073768 -0.0073768 -0.0018445 -1.8891058

f(Xr) 1 -0.46875 0.23828125 -0.1176758 0.05914307 -0.0294876 0.01476383 -0.0073768 0.00368966 -0.0018445 0.00092234 -0.0004611

f´(𝑥)=7−10𝑥+18𝑥^2

Newton/Raphson iteración

xi 1 2 3 4 5 6 7 8 9

f(xi) f'(xi) xi+1 Ea 0 -2 7 0.28571429 0.28571429 -0.2682216 5.6122449 0.33350649 100 0.33350649 0.00098127 5.66701353 0.33333334 14.3302181 0.33333334 0.00000003 5.66666668 0.33333333 0.05194646 0.33333333 0 5.66666667 0.33333333 1.5906E-06 0.33333333 0 5.66666667 0.33333333 0 0.33333333 0 5.66666667 0.33333333 0 0.33333333 0 5.66666667 0.33333333 0 0.33333333 0 5.66666667 0.33333333 0

f(a)*f(Xr) -2 0.9375 -0.1116943 0.05516052 -0.0069597 0.00346998 -0.0004354 0.00021752 -2.7218E-05 1.3607E-05 -1.7013E-06 0.00087116

Falsa Posición Iteración

Ea

Xl 1 2 3 4 5 6 7 8 9 10

100 33.3333333 20 9.09090909 4.76190476 2.3255814 1.17647059 0.58479532 0.29325513 0.14641288 0.07326007 Secante iteración

xi-1 1 2 3 4 5 6 7 8 9 10

0 1 0.25 0.3043478261 0.3334735956 0.3333327375 0.3333333333 0.3333333333 0.3333333333 #DIV/0!

Xu

0 0.25 0.30434783 0.32280777 0.32946186 0.33190305 0.33280409 0.33313738 0.33326077 0.33330646

Xr 1 1 1 1 1 1 1 1 1 1

0.25 0.30434783 0.32280777 0.32946186 0.33190305 0.33280409 0.33313738 0.33326077 0.33330646 0.49293846

xi

f(xi-1)

f(xi)

1 0.25 0.30434783 0.3334736 0.33333274 0.33333333 0.33333333 0.33333333 #DIV/0! #DIV/0!

-2 6 -0.46875 -0.1635572 0.00079484 -3.3761E-06 -8.3634E-11 0 0 #DIV/0!

6 -0.46875 -0.1635572 0.00079484 -3.3761E-06 -8.3634E-11 0 0 #DIV/0! #DIV/0!

f(Xl) -2 -0.46875 -0.1635572 -0.0595411 -0.0219237 -0.0081029 -0.0029988 -0.0011103 -0.0004112 -1.8889068

xi+1 0.25 0.30434783 0.3334736 0.33333274 0.33333333 0.33333333 0.33333333 #DIV/0! #DIV/0! #DIV/0!

f(Xu)

f(Xr) f(Xr)f(Xl) Ea 6 -0.46875 0.9375 6 -0.1635572 0.07666742 17.8571429 6 -0.0595411 0.00973837 5.71855513 6 -0.0219237 0.00130536 2.01968605 6 -0.0081029 0.00017765 0.73551385 6 -0.0029988 2.4299E-05 0.27074049 6 -0.0011103 3.3297E-06 0.10004712 6 -0.0004112 4.5657E-07 0.03702344 6 -0.0001523 6.262E-08 0.01370813 6 0.95429733 -1.8025787 32.3837584

Ea 17.8571429 8.73405569 0.0422575 0.00017873 4.4277E-09 0 #DIV/0! #DIV/0! #DIV/0!

Punto fijo Iteración

x1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

f(x) 1 0.142857143 0.14285714 0.297792586 0.29779259 0.326421698 0.3264217 0.33201029 0.33201029 0.333081077 0.33308108 0.333285275 0.33328528 0.333324179 0.33332418 0.33333159 0.33333159 0.333333001 0.333333 0.33333327 0.33333327 0.333333321 0.33333332 0.333333331 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333 0.33333333 0.333333333

E% 600 52.027972028 8.7705907994 1.6832587124 0.3214793981 0.0612683647 0.0116714268 0.0022231748 0.0004234635 8.065978E-05 1.536377E-05 2.926433E-06 5.574157E-07 1.061744E-07 2.022371E-08 3.852135E-09 7.337464E-10 1.397549E-10 2.66287E-11 5.062617E-12 9.65894E-13 0 0 0 0 0 0 0 0 0 0 0 0

Gráfico Iteración

X

Y

1 0 -2 2 0.05 -1.66175 3 0.1 -1.344 4 0.15 -1.04225 5 0.2 -0.752 6 0.25 -0.46875 7 0.3 -0.188 8 0.333333339 3.211111E-08 9 0.4 0.384 10 0.45 0.68425 11 0.5 1 12 0.55 1.33575 13 0.6 1.696 14 0.65 2.08525 15 0.7 2.508 16 0.75 2.96875 17 0.8 3.472 18 0.85 4.02225 19 0.9 4.624 20 0.95 5.28175 21 1 6

f(𝑥)=−2+7𝑥−5𝑥^2+6𝑥^3

Chart Title 7 6 5 4 3 2 1 0 -1 -2 -3

0

0.2

0.4

0.6

0.8

1

1.2

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