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QUESTION IS x(t)=exp(a*t) while a>1

how to plot the solution of the program in graphical window of scilab?

i.e in the code how to specify the range of a from 1 to infinity and its syntax in scilab??

and please specify the code of the above program??

Scilab

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In "**wikipedia**" the infinite is defined as *something without any bound or larger than any number.*But in the computation, the program needs a value to do the calculations. One can not touch or reach infinity but for his own satisfaction he goes to a maximum extent. By using this, one can select a maximum value to solve the given problem. I am considering the **10^25** as the maximum extent for **exp(at)** where **a**> 0. With the maximum value we can find the "**t**" in the following way exp(at) = 10^25, t = 25*log(10)/a. By using this "**t**" value we can solve the plotting problem. I am writing a simple code about it and hoping that it will be the right answer.

function Exp(a)\n t = 25*log(10)/a\n t = ceil(t)\n time = 0:t/1000:t\n s = poly(0,'s')\n temptf = syslin('c',1/(s+a))\n y = csim('step',time,temptf)\n plot(y,time)\nendfunction

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