Answer is NaN??

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I insert tau, s, c, belta value at comment window and set "x=linspace(0,pi/2,101)". Why i get all those weird answer? Please help!!! >>

[the cyclist]

As has been commented before on your question, it is better to upload your actually code, not an image of it. Then, we can copy and paste the code ourselves and run it.

Please show the code for how you call this as well. Just a description doesn't really help.

Answer 1

[Walter Roberson]

You have, in part, (x-tau(k)).^(-1) . If there is any x equal to tau(k) then the subtraction would give 0 and raising that to power -1 would give infinity. Infinity times any non-zero value gives infinity (infinity times 0 gives nan), so you would be adding infinity to the value, resulting in infinity. And then since you are effectively totaling values, you are going to get an infinite result (unless one of the s or c or belta is 0 at just the right time, in which case you get nan)