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shimaa sadk

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7 years, 268 days
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These are questions asked by shimaa sadk

What Float(undefined) is mean as a resul...

shimaa sadk 45 Maple 18
integration numeric undefined
July 04 2018
1 6


 

``

> 

lambda[1] := .3:
> 

evalf(int(2*alpha^2*Z*exp(lambda[1]*Z)/((exp(lambda[1]*Z)-1+alpha)^2*(exp(lambda[2]*Z)-1+alpha)), Z = 0 .. infinity))

Float(undefined)

 (1)
> 

``


 

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how to stop a loop in fsolve...

shimaa sadk 45
loop fsolve
May 20 2018
2 1

hi,i used ifsolve  comand in my sheat and i have aloop over it  but some times my equations   can't be  solved .My question is how i give an order to maple to stop the loop if the equations can't solve 
 


 

how to generate a binomial sample ...

shimaa sadk 45 Maple
statistics homework binomial
May 11 2018
1 3


here my code . iam trying to generate a binomial sample but there is some error occure please help

> 

with(Statistics):

 

> 

with(Student[Statistics]):
> 

``
> 

P := .1:
> 

``
> 

r[1] := convert(BinomialRandomVariable(N-n, P), `+`)

`Non-fatal error while reading data from kernel.`

 (1)
> 

for i from 2 to N-n do A[i-1] := convert(r[i-1], `+`); r[i] := BinomialRandomVariable(N-n-(sum(A[i], j = 1 .. i-1)), P) end do;

`Non-fatal error while reading data from kernel.`

  

`Non-fatal error while reading data from kernel.`

  

`Non-fatal error while reading data from kernel.`

  

`Non-fatal error while reading data from kernel.`

  

`Non-fatal error while reading data from kernel.`

  

`Non-fatal error while reading data from kernel.`

  

`Non-fatal error while reading data from kernel.`

  

`Non-fatal error while reading data from kernel.`

 (2)
> 

for i to N-n do x[i] := Sample(r[i], 1) end do

x[1] := Vector[row](1, {(1) = 1})

  

Error, (in pr) unable to evaluate 5-A[2] to floating-point

  
> 

sum(R[j], j = 0 .. 10)

2+R[0]+r[4]+r[5]+R[6]+R[7]+R[8]+R[9]+R[10]

 (3)
> 

``

NULL


 

 

what is HFLOAT mean...

shimaa sadk 45 Maple
hfloat
April 27 2018
0 1

I 'm solving asystem of equations and one of the result are Hfloat what does it means and how i convert it to number???

how to sign alable to groups member...

shimaa sadk 45 Maple
assign substitution equate
January 15 2018
1 2

if i have agroup consist of two values for example {0.2,0.5} how to name 0.2 with a certian symple like R and 0.5 with other sympol

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