shadylady02

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17 years, 245 days

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These are questions asked by shadylady02

Hi I have constructed a do loop to represent an epidemic described by 3 equations. I have plotted these using the initial conditions given. If i want to identify the values of S[k], I[k] and R[k] at k=60 how do i enter this? And how do i find out the exact point where the epidemic reaches its peak?
I am trying to calculate the second derivative of a taylor expansion. Could anyone tell me how to enter this command? Thanks Rachel
I've been trying to plot the function f:=x->(e^(-a*x^2)-b*x*ln(1+x^2))/(2+x^2+c*sin(Pi*x)); with values a,b,c which have been assigned on maple. when i try to plot the function using: plot(f(x),x=-4..4); I get the error: 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 I have tried all ways i can possibly think and cannot get it to plot the graph. Can anyone help?
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