How to avoid float undefined

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Question:How to avoid float undefined

Posted: JenaRRM 25 Product: Maple

January 07 2022

Dear Sir/Madam,

Greetings of the day.

If I am considering the value of "gam=0.5,0.7,0.9" in the code other than 1, I am unbale to draw figure using this code. Also, I can not evaluate the values of A1[200]; A1[400]; A1[600]; A1[800]; A1[1000]. It is showing float undefined.

Please help me in this regard. Thanks in advance

h := 0.1e-2; alpha := proc (t) options operator, arrow; .97+0.3e-1*cos((1/10)*t) end proc; gam := .5

for n from 0 to 999 do t[n] := n*h end do

for n from 0 to 0 do y[n+1] := y[n]+h^alpha(t[n])*f1(y[n], t[n])/GAMMA(alpha(t[n])+1) end do

(1)

for n to 999 do y[n+1] := y[0]+gam*h^alpha(t[n])*(sum(t[j]^(gam-1)*((n+1-j)^alpha(t[n])*(n-j+2+alpha(t[n]))-(n-j)^alpha(t[n])*(n-j+2+2*alpha(t[n])))*f1(y[j], t[j])-t[j-1]^(gam-1)*((n+1-j)^(alpha(t[n])+1)-(n-j)^alpha(t[n])*(n-j+1+alpha(t[n])))*f1(y[j-1], t[j-1]), j = 1 .. n))/GAMMA(2+alpha(t[n])) end do