scilab programmes

prathima · 2013-12-31 17:09:08

i need scilab progam for
1. to obtain fibonacci series
2.to obtain non fibonacci series
3. to find the root of the equation f(x,a)=a*cos(x)-x*e(-a*x) for different values of a∈[1,10]
please reply soon.
it is imporant for my exams

Last edited by prathima (2013-12-31 17:27:06)

bobbym · 2013-12-31 18:48:23

I do not program in Scilab. Best I can do is pseudocode, you will and should write them.

prathima · 2013-12-31 19:13:48

ok....

bobbym · 2013-12-31 19:30:59

1. to obtain fibonacci series

I guess you mean Fibonacci sequence.

1) x1 = 1;
2) x2 = 1;
3) h = x2;
4) x2 = x1 + x2;
5)Print[x2]
5) x1 = h;
6) Goto 3

Remember to debug it if necessary. I am partying.

2.to obtain non fibonacci series

What is a non Fibonacci sequence specifically?

prathima · 2013-12-31 20:09:36

non fibonacci sequence is 4,6,7,9.10,11,12,14,15,16,17,18,19,20,...

gAr · 2013-12-31 21:15:19

The example for Fibonacci is there: http://hkumath.hku.hk/~nkt/Scilab/IntroToScilab.html

for 3, you can use newton-raphson,

E.g. in python,

from math import exp, sin, cos
t=3
told=1
a=5
while abs(t-told) > 0.00000000001:
    told=t
    t=t - (a*cos(t) - t*exp(-a*t))/(a*t*exp(-a*t) - a*sin(t) - exp(-a*t))
print t

prathima · 2013-12-31 22:18:47

i dnt knw hw to insert the condition that a∈[1,10] in newton raphson method

bobbym · 2013-12-31 22:24:05

Hi;

Is it continuous?

prathima · 2014-01-01 01:04:11

i dont know.
in question it is not clear that a is continous or not

Last edited by prathima (2014-01-01 01:06:38)

bobbym · 2014-01-01 01:06:16

What values can a take? a = 1,2,3,4... integers? Or any value from 1 to 10 like 7.27?

prathima · 2014-01-01 01:10:46

question is
scilab program to find the root of eqn f(x,a)=a*cos(x)-x*e^(-a*x) for different values of a∈[1,10]

bobbym · 2014-01-01 01:13:30

Why not use the code gAr provided for python.

from math import exp, sin, cos
t=3
told=1
input[a];
while abs(t-told) > 0.00000000001:
    told=t
    t=t - (a*cos(t) - t*exp(-a*t))/(a*t*exp(-a*t) - a*sin(t) - exp(-a*t))
print t

I just changed one line to Input[a]. Now you can enter any a you want.

prathima · 2014-01-01 01:23:58

thank you:)

prathima · 2014-01-01 01:25:07

scilab program to obtain non fibonacci series

bobbym · 2014-01-01 01:33:21

Generate the fibonacci numbers like I did in the first post and then an array of {1,2,3,4,5....}. When you get a fibonacci number cross it out by zeroing the array element.

prathima · 2014-01-01 01:46:46

zeroing the array element means

bobbym · 2014-01-01 01:48:51

Putting a zero in the array element.

Agnishom · 2014-01-01 01:50:04

prathima wrote:

it is imporant for my exams

I hope you do not mind me asking but what grade student are you?

bobbym · 2014-01-01 01:52:40

i am not getting

Do you know what an array is?

Agnishom · 2014-01-01 01:58:32

http://rosettacode.org/wiki/Fibonacci_sequence

anonimnystefy · 2014-01-01 02:00:26

Hi prathima

Basically, just take the array {1,2,3,4,5,6,...} and put a zero instead all the numbers which are Fibonacci numbers.

Last edited by anonimnystefy (2014-01-01 02:00:47)

bobbym · 2014-01-01 02:00:53

He can not do that yet.

prathima · 2014-01-01 02:01:26

in scilab array set values in vector form for ex. A=[1 2 3]

bobbym · 2014-01-01 02:02:20

Do you know how to access an individual array element?

bobbym · 2014-01-01 02:03:41

What is pg?

Math Is Fun Forum

#1 2013-12-31 17:09:08

scilab programmes

#2 2013-12-31 18:48:23

Re: scilab programmes

#3 2013-12-31 19:13:48

Re: scilab programmes

#4 2013-12-31 19:30:59

Re: scilab programmes

#5 2013-12-31 20:09:36

Re: scilab programmes

#6 2013-12-31 21:15:19

Re: scilab programmes

#7 2013-12-31 22:18:47

Re: scilab programmes

#8 2013-12-31 22:24:05

Re: scilab programmes

#9 2014-01-01 01:04:11

Re: scilab programmes

#10 2014-01-01 01:06:16

Re: scilab programmes

#11 2014-01-01 01:10:46

Re: scilab programmes

#12 2014-01-01 01:13:30

Re: scilab programmes

#13 2014-01-01 01:23:58

Re: scilab programmes

#14 2014-01-01 01:25:07

Re: scilab programmes

#15 2014-01-01 01:33:21

Re: scilab programmes

#16 2014-01-01 01:46:46

Re: scilab programmes

#17 2014-01-01 01:48:51

Re: scilab programmes

#18 2014-01-01 01:50:04

Re: scilab programmes

#19 2014-01-01 01:52:40

Re: scilab programmes

#20 2014-01-01 01:58:32

Re: scilab programmes

#21 2014-01-01 02:00:26

Re: scilab programmes

#22 2014-01-01 02:00:53

Re: scilab programmes

#23 2014-01-01 02:01:26

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#24 2014-01-01 02:02:20

Re: scilab programmes

#25 2014-01-01 02:03:41

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