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bliengme

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These are questions asked by bliengme

integration of r/cosh(b-rt) wrt t...

bliengme 70 Maple
integration
February 07 2019
2 3

A book I am reading has the following

I cannot produce this in Maple 2017. Please tell me where I go wrong. Thank


 

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restart
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"P(t):=(r*Q[inf])/(2+2 cosh(b-r*t))"

proc (t) options operator, arrow; r*Q[inf]/(2+2*cosh(b-r*t)) end proc

 (1)
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"Q(t):=(∫)[0]^(t)P(t) ⅆt"

proc (t) options operator, arrow; int(P(t), t = 0 .. t) end proc

 (2)
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Download Hubbert.mw

Using RAND to simulate coin toss...

bliengme 70 Maple 2017
random homework
January 30 2019
5 8

Trying to simulate tossing 10 coins. What  am i doing rong? Thanks

 

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restart
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a := Vector[row](1 .. 10)

Vector[row](%id = 18446745395177063238)

 (1)
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randomize()
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for k to 10 do r := rand(1 .. 2); if r < .5 then a[k] := "H" else a[k] := "T"; print(a[k]) end if end do

proc () (proc () option builtin = RandNumberInterface; end proc)(6, 2, 1)+1 end proc

  

Error, cannot determine if this expression is true or false: r < .5

  
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a

Vector[row](%id = 18446745395177063238)

 (2)
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``


 

Download CoinToss.mw

 

 

What ius wrong here?...

bliengme 70 Maple
syntax
January 03 2019
1 0

Another GCD attempt. Why is there a parse problem? Thanks


 

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restart
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"proc GCD3:=proc(n1,n2) local r, a,b; a:=n1; b:= n2; while (a mod b) >0 do r:=a mod b; a:=b; b:=r; end do; return b; end proc; "

Error, unable to parse

"proc GCD3:=proc(n1,n2) local r, a,b; a:=n1; b:= n2; while (a mod b) >0 do r:=a mod b; a:=b; b:=r; end do; return b; end proc; "

  
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``


 

Download GCD3.mw

Why is procedure unterminated?...

bliengme 70 Maple
syntax procedure
January 03 2019
3 5

Any sugggestions gratefully received

I do know that Maple has a gcd command but I am just experimenting

GCD2.mw
 

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restart
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"GED2:=proc(n1 ,n2) local a,b; option remember; a:=n1:b:=n2: if b = 0 then do return a ; else return GED2(b, a mod b); end if; end proc;"

Error, unterminated procedure

"GED2:=proc(n1 ,n2) local a,b; option remember; a:=n1:b:=n2: if b = 0 then do return a ; else return GED2(b, a mod b); end if; end proc;"

  
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``


 

Download GCD2.mw

 

Plot with semilog scale on vertical axis...

bliengme 70 Maple
December 19 2018
1 8

I know abut semilogpot - it gives a semilog scale on the horizontal axis.

Is there any way to get semilog scale on the vertical axis?

Season's greeting

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