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need help in plotting curve

 hi, I'm trying a dynamics problem and trying to plot the displacement with respect to time function.  However I'm returned with an error message "subscripts must be either integers 1 to (2^63)-1 or logicals error: called from     utvst at line 7 column 3" which I'm not able to figure out thanks t = linspace(0,0.01,500); x0 = 0.01; xdot0 = 0.1; m = 40; k = 3500; omega = sqrt(k/m); ut = sum((x0.*cos(omega.*t))+((xdot0/omega)(sin(omega.*t)))); plot(ut,t) -- Sent from: https://octave.1599824.n4.nabble.com/Octave-General-f1599825.html
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Re: need help in plotting curve

 Am 17.09.19 um 19:33 schrieb navshinder: > hi, > I'm trying a dynamics problem and trying to plot the displacement with > respect to time function.  However I'm returned with an error message > "subscripts must be either integers 1 to (2^63)-1 or logicals > error: called from >      utvst at line 7 column 3" > which I'm not able to figure out > thanks > > t = linspace(0,0.01,500); > x0 = 0.01; > xdot0 = 0.1; > m = 40; > k = 3500; > omega = sqrt(k/m); > ut = sum((x0.*cos(omega.*t))+((xdot0/omega)(sin(omega.*t)))); > plot(ut,t) > > > > > -- > Sent from: https://octave.1599824.n4.nabble.com/Octave-General-f1599825.html> > Looks to me as if in the line ut=... there is missing a * between (xdot0/omega) and (sin(omega.*t)) . (xdot0/omega)
 In reply to this post by navshinder On Tue, Sep 17, 2019 at 2:13 PM navshinder <[hidden email]> wrote:hi, I'm trying a dynamics problem and trying to plot the displacement with respect to time function.  However I'm returned with an error message "subscripts must be either integers 1 to (2^63)-1 or logicals error: called from     utvst at line 7 column 3" which I'm not able to figure out thanks t = linspace(0,0.01,500); x0 = 0.01; xdot0 = 0.1; m = 40; k = 3500; omega = sqrt(k/m); ut = sum((x0.*cos(omega.*t))+((xdot0/omega)(sin(omega.*t))));You need a * or +  at here ----------------------------^  plot(ut,t) -- Sent from: https://octave.1599824.n4.nabble.com/Octave-General-f1599825.html -- DAS 