Matlab Sysmolic maths differential equation


by SpartanG345
Tags: differential, equation, maths, matlab, sysmolic
SpartanG345
SpartanG345 is offline
#1
Mar13-12, 11:13 PM
P: 72
Hi

is it possible to represent unknown functions eg x(t) in matlab equations ?

eg have f = x''
diff(f) = x'

or have a derivative represented via differential eg dx/dt
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SpartanG345
SpartanG345 is offline
#2
Mar24-12, 10:54 PM
P: 72
finally found it out for those who want to know

>> y = sym('y(t)')

y =

y(t)


>> f = diff(y,2) + diff(y,1) + y

f =

diff(y(t),$(t,2))+diff(y(t),t)+y(t)


>> pretty(f)

/ 2 \
|d | /d \
|--- y(t)| + |-- y(t)| + y(t)
| 2 | \dt /
\dt /
>>


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