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I tried to execute this simple command

Plot[Cosh[t] - Sinh[t] + Sin[t], {t, 0, 40}]

and this is the result I got

[![enter image description here][1]][1]

As you can see, there is an unexpected visual between $t=30$ and $t=40$. But when I used the identity $e^{-t}=\cosh{t}-\sinh{t}$, everything went fine. This command

Plot[Exp[-t] + Sin[t], {t, 0, 40}]

gives

[![enter image description here][2]][2]

What's going on here? Can anyone reproduce this result? Is this a bug? I'm using MMA 12 64bit on Windows 10. [1]: https://i.sstatic.net/tGAvh.png [2]: https://i.sstatic.net/GusTr.png

I tried to execute this simple command

Plot[Cosh[t] - Sinh[t] + Sin[t], {t, 0, 40}]

and this is the result I got

As you can see, there is an unexpected visual between $t=30$ and $t=40$. But when I used the identity $e^{-t}=\cosh{t}-\sinh{t}$, everything went fine. This command

Plot[Exp[-t] + Sin[t], {t, 0, 40}]

gives

What's going on here? Can anyone reproduce this result? Is this a bug? I'm using MMA 12 64bit on Windows 10.

I tried to execute this simple command

Plot[Cosh[t] - Sinh[t] + Sin[t], {t, 0, 40}]

and this is the result I got

[![enter image description here][1]][1]

As you can see, there is an unexpected visual between $t=30$ and $t=40$. But when I used the identity $e^{-t}=\cosh{t}-\sinh{t}$, everything went fine. This command

Plot[Exp[-t] + Sin[t], {t, 0, 40}]

gives

[![enter image description here][2]][2]

What's going on here? Can anyone reproduce this result? Is this a bug? I'm using WMA 12 64bit on Windows 10. [1]: https://i.sstatic.net/tGAvh.png [2]: https://i.sstatic.net/GusTr.png

I tried to execute this simple command

Plot[Cosh[t] - Sinh[t] + Sin[t], {t, 0, 40}]

and this is the result I got

[![enter image description here][1]][1]

As you can see, there is an unexpected visual between $t=30$ and $t=40$. But when I used the identity $e^{-t}=\cosh{t}-\sinh{t}$, everything went fine. This command

Plot[Exp[-t] + Sin[t], {t, 0, 40}]

gives

[![enter image description here][2]][2]

What's going on here? Can anyone reproduce this result? Is this a bug? I'm using MMA 12 64bit on Windows 10. [1]: https://i.sstatic.net/tGAvh.png [2]: https://i.sstatic.net/GusTr.png

I tried to execute this simple command

Plot[Cosh[t] - Sinh[t] + Sin[t], {t, 0, 40}]

and this is the result I got

[![enter image description here][1]][1]

As you can see, there is an unexpected visual between $t=30$ and $t=40$. But when I used the identity $e^{-t}=\cosh{t}-\sinh{t}$, everything went fine. This command

Plot[Exp[-t] + Sin[t], {t, 0, 40}]

gives

[![enter image description here][2]][2]

What's going on here? Is this a bug? I'm using WMA 12 64bit on Windows 10. [1]: https://i.sstatic.net/tGAvh.png [2]: https://i.sstatic.net/GusTr.png

I tried to execute this simple command

Plot[Cosh[t] - Sinh[t] + Sin[t], {t, 0, 40}]

and this is the result I got

[![enter image description here][1]][1]

As you can see, there is an unexpected visual between $t=30$ and $t=40$. But when I used the identity $e^{-t}=\cosh{t}-\sinh{t}$, everything went fine. This command

Plot[Exp[-t] + Sin[t], {t, 0, 40}]

gives

[![enter image description here][2]][2]

What's going on here? Can anyone reproduce this result? Is this a bug? I'm using WMA 12 64bit on Windows 10. [1]: https://i.sstatic.net/tGAvh.png [2]: https://i.sstatic.net/GusTr.png