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Question: unable to evaluate function to numeric values in the region

Question:unable to evaluate function to numeric values in the region

Aakanksha 30 MaplePrimes
student
October 28 2014
1


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restart:
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m:=2; k:=75.11; L:=3; a=k-m*L; b:=k+m*L-1;

m := 2

k := 75.11

L := 3

a = 69.11

b := 80.11

> 

z:=(k*m)/snr;

z := 150.22/snr

> 

z1:=z^((b+1)/2);

z1 := 0.1893190041e89*(1/snr)^40.55500000

> 

x:=z1/(0.693*GAMMA(m*L)*GAMMA(k));

x := 0.4283082808e-21*(1/snr)^40.55500000

> 

me:=MeijerG([[1-a/2,1+a/2,1+(b+1)/2,1+(b+1)/2],[]],[[1+(b+1)/2],[(b+1)/2]],(1/z));

me := MeijerG([[1.-.5000000000*a, 1.+.5000000000*a, 41.55500000, 41.55500000], []], [[41.55500000], [40.55500000]], 0.6656903209e-2*snr)

> 

cap:=x*me;

cap := 0.4283082808e-21*(1/snr)^40.55500000*MeijerG([[1.-.5000000000*a, 1.+.5000000000*a, 41.55500000, 41.55500000], []], [[41.55500000], [40.55500000]], 0.6656903209e-2*snr)

> 

with(plots):

Warning, the name changecoords has been redefined

> 

plot(cap,snr=1..20);

Warning, unable to evaluate the function to numeric values in the region; see the plotting command's help page to ensure the calling sequence is correct

Error, empty plot

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Just a begineer in maple and dont know how to rectify this error.

any help..???

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