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permanoon123

Mr. Erfan Permanoon

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5 years, 135 days
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These are replies submitted by permanoon123

@Carl Love  Thanks...

permanoon123 165
February 25 2020
0 0

@Carl Love 

Thanks

inverse time...

permanoon123 165
November 26 2019
0 0

@Carl Love 

I want A1 start at the end(t=20000), this means the time of graph A1 reduction such as t0=20000 and then t1=19000,...

how to write Double Integrals in maple w...

permanoon123 165
November 16 2019
0 0

@acer 

how to write Double Integrals in maple with ApproximateInt rule?

@acer  The method of integration ...

permanoon123 165
November 16 2019
0 0

@acer 

The method of integration does not matter٫i want numberical integral just.

f(y)=y^2,thanks...

permanoon123 165
November 15 2019
0 0

@Carl Love 

f(y)=y^2,thanks

this is my mistake,I corrected. thanks f...

permanoon123 165
November 15 2019
0 0

@acer 

this is my mistake,I corrected. thanks for say

In iran the app is embargo but other cou...

permanoon123 165
October 02 2019

@cfdtrader 

My country is forbiddance...

permanoon123 165
September 28 2019

How can i download this app!

Help me.thanks

i want plot2d in x=10000 & t=0..T.can yo...

permanoon123 165
September 21 2019
0 0

@Rouben Rostamian  

@tomleslie  I think time-series re...

permanoon123 165
September 17 2019
0 0

@tomleslie 

I think time-series result ( i mean graph) is incorrect?

I think it should be parabolic.

@acer  thanks...

permanoon123 165
June 18 2019
0 0

@acer  thanks

@Rouben Rostamian   Thanks alot...

permanoon123 165
June 16 2019
0 0

@Rouben Rostamian  

Thanks alot

why Maple will not accept the last two b...

permanoon123 165
June 15 2019
0 0


 

> 

restart
> 

with(plots):
> 

with(CurveFitting):
> 

pts := [Vector[row](91, {(1) = 0, (2) = 2.837174309, (3) = 5.296190702, (4) = 7.754217154, (5) = 9.804387424, (6) = 12.26340382, (7) = 14.72242021, (8) = 16.77160054, (9) = 19.23061693, (10) = 21.68963333, (11) = 23.73881365, (12) = 26.19783005, (13) = 29.06668251, (14) = 31.5256989, (15) = 33.57487923, (16) = 36.03389562, (17) = 38.49291201, (18) = 40.54209234, (19) = 43.00110874, (20) = 45.46012513, (21) = 47.91914152, (22) = 49.96832185, (23) = 52.42733824, (24) = 54.88635464, (25) = 56.93553496, (26) = 59.80438742, (27) = 62.67323988, (28) = 65.13027639, (29) = 67.58830284, (30) = 69.63550329, (31) = 72.0925398, (32) = 74.54858636, (33) = 76.59479686, (34) = 79.04886355, (35) = 81.50194029, (36) = 84.36089332, (37) = 88.03456878, (38) = 90.88956205, (39) = 93.33570919, (40) = 96.18971252, (41) = 98.63585967, (42) = 101.0820068, (43) = 103.5301338, (44) = 105.9802408, (45) = 108.0224915, (46) = 112.1129326, (47) = 114.5709591, (48) = 118.2604736, (49) = 120.3116338, (50) = 122.77362, (51) = 126.0562683, (52) = 128.5162746, (53) = 130.976281, (54) = 133.4333175, (55) = 135.479528, (56) = 137.9335947, (57) = 140.3856815, (58) = 143.2446345, (59) = 145.2858953, (60) = 147.7350123, (61) = 150.1831393, (62) = 152.6322563, (63) = 154.6735171, (64) = 157.1246139, (65) = 159.5767007, (66) = 161.6229112, (67) = 164.0799477, (68) = 166.5379742, (69) = 168.5911143, (70) = 171.0550804, (71) = 173.5230063, (72) = 175.5791162, (73) = 178.0519918, (74) = 181.763285, (75) = 184.6509464, (76) = 187.5395977, (77) = 190.8400649, (78) = 193.7267364, (79) = 197.0252237, (80) = 199.4961194, (81) = 202.3778411, (82) = 204.8467569, (83) = 206.9028669, (84) = 209.3688129, (85) = 211.8337689, (86) = 213.886909, (87) = 216.3498852, (88) = 218.8118714, (89) = 220.8630316, (90) = 222.5033658, (91) = 225}), Vector[row](91, {(1) = 0.46376812e-1, (2) = 0.46376812e-1, (3) = 0.46376812e-1, (4) = 0.46376812e-1, (5) = 0.46376812e-1, (6) = 0.46376812e-1, (7) = 0.46376812e-1, (8) = 0.46376812e-1, (9) = 0.46376812e-1, (10) = 0.46376812e-1, (11) = 0.46376812e-1, (12) = 0.46376812e-1, (13) = 0.46376812e-1, (14) = 0.46376812e-1, (15) = 0.46376812e-1, (16) = 0.46376812e-1, (17) = 0.46376812e-1, (18) = 0.46376812e-1, (19) = 0.46376812e-1, (20) = 0.46376812e-1, (21) = 0.46376812e-1, (22) = 0.46376812e-1, (23) = 0.46376812e-1, (24) = 0.46376812e-1, (25) = 0.46376812e-1, (26) = 0.46376812e-1, (27) = 0.46376812e-1, (28) = 0.46376812e-1, (29) = 0.50724638e-1, (30) = 0.53623188e-1, (31) = 0.56521739e-1, (32) = 0.60869565e-1, (33) = 0.65217391e-1, (34) = 0.72463768e-1, (35) = 0.8115942e-1, (36) = 0.95652174e-1, (37) = .117391304, (38) = .137681159, (39) = .156521739, (40) = .17826087, (41) = .197101449, (42) = .215942029, (43) = .231884058, (44) = .244927536, (45) = .255072464, (46) = .266666667, (47) = .268115942, (48) = .266666667, (49) = .263768116, (50) = .25942029, (51) = .253623188, (52) = .252173913, (53) = .250724638, (54) = .253623188, (55) = .257971014, (56) = .265217391, (57) = .275362319, (58) = .289855072, (59) = .301449275, (60) = .315942029, (61) = .331884058, (62) = .346376812, (63) = .357971014, (64) = .369565217, (65) = .379710145, (66) = .384057971, (67) = .386956522, (68) = .388405797, (69) = .382608696, (70) = .375362319, (71) = .362318841, (72) = .352173913, (73) = .331884058, (74) = .298550725, (75) = .271014493, (76) = .242028986, (77) = .210144928, (78) = .184057971, (79) = .155072464, (80) = .137681159, (81) = .11884058, (82) = .104347826, (83) = 0.94202899e-1, (84) = 0.84057971e-1, (85) = 0.75362319e-1, (86) = 0.69565217e-1, (87) = 0.63768116e-1, (88) = 0.5942029e-1, (89) = 0.56521739e-1, (90) = 0.54072464e-1, (91) = 0.46376812e-1})]
> 

A := unapply(Spline(pts[1], pts[2], x, degree = 2), x):
> 

plot(A(x), x = 0 .. 225)

 

 

 
> 

PDE := diff(C(x, t), t) = diff(C(x, t), x)-5*(diff(C(x, t), x, x, x, x))-(diff(C(x, t), x, x)):
> 

> 

NULL
> 

IBC := C(x, 0) = A(x), (D[1](C))(0, t) = 0, (D[1](C))(225, t) = 0, (D[2](C))(0, t) = 0, (D[2](C))(225, t) = 0:
> 

pds := pdsolve(PDE, [IBC], time = t, range = 0 .. 225, timestep = 0.5e-2, numeric, method = CrankNicholson, spacestep = 1)

Error, (in pdsolve/numeric/process_IBCs) initial/boundary conditions can only contain derivatives which are normal to the boundary, got (D[2](C))(0, t)

  
> 

sol1 := pds:-value(x = 0, t = 0 .. 300)
sol1(100)
sol1(125)

sol1(225); pds:-plot(x = 0, t = 0 .. 300)
``

Error, `pds` does not evaluate to a module

  

sol1(100)

  

sol1(125)

  

sol1(225)

  

Error, `pds` does not evaluate to a module

  
> 

NULL


 

Download result_2.mw

@tomleslie 

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