How to combine fractions using octave symbolic?
Does anyone know how to get Octave to combine fractions in the symbolic package? For example, I would like to make "1+1/s"
rewritten as "(s^2 + 1)/s"
.
My reason is that I want to get zeros and poles of frequency domain expressions into the right place in the rational expression. The above is a very simple example of a more complicated use case, typically with lots of R, L, C constants.
matlab octave symbolic-math
add a comment |
Does anyone know how to get Octave to combine fractions in the symbolic package? For example, I would like to make "1+1/s"
rewritten as "(s^2 + 1)/s"
.
My reason is that I want to get zeros and poles of frequency domain expressions into the right place in the rational expression. The above is a very simple example of a more complicated use case, typically with lots of R, L, C constants.
matlab octave symbolic-math
I guess that you mean(s+1)/s
and not(s^2+1)/s
. You can use the functionfactor
.
– obchardon
Nov 28 '18 at 9:06
add a comment |
Does anyone know how to get Octave to combine fractions in the symbolic package? For example, I would like to make "1+1/s"
rewritten as "(s^2 + 1)/s"
.
My reason is that I want to get zeros and poles of frequency domain expressions into the right place in the rational expression. The above is a very simple example of a more complicated use case, typically with lots of R, L, C constants.
matlab octave symbolic-math
Does anyone know how to get Octave to combine fractions in the symbolic package? For example, I would like to make "1+1/s"
rewritten as "(s^2 + 1)/s"
.
My reason is that I want to get zeros and poles of frequency domain expressions into the right place in the rational expression. The above is a very simple example of a more complicated use case, typically with lots of R, L, C constants.
matlab octave symbolic-math
matlab octave symbolic-math
edited Nov 28 '18 at 6:20
TeeKea
3,22851932
3,22851932
asked Nov 28 '18 at 6:09
forkandwaitforkandwait
1,98461820
1,98461820
I guess that you mean(s+1)/s
and not(s^2+1)/s
. You can use the functionfactor
.
– obchardon
Nov 28 '18 at 9:06
add a comment |
I guess that you mean(s+1)/s
and not(s^2+1)/s
. You can use the functionfactor
.
– obchardon
Nov 28 '18 at 9:06
I guess that you mean
(s+1)/s
and not (s^2+1)/s
. You can use the function factor
.– obchardon
Nov 28 '18 at 9:06
I guess that you mean
(s+1)/s
and not (s^2+1)/s
. You can use the function factor
.– obchardon
Nov 28 '18 at 9:06
add a comment |
1 Answer
1
active
oldest
votes
You can use the function factor()
, in this case it will simply put the whole expression with the same common denominator:
syms x,s
x = 1+1/s
res = factor(x)
and
res =
s + 1
─────
s
add a comment |
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1 Answer
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1 Answer
1
active
oldest
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oldest
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oldest
votes
You can use the function factor()
, in this case it will simply put the whole expression with the same common denominator:
syms x,s
x = 1+1/s
res = factor(x)
and
res =
s + 1
─────
s
add a comment |
You can use the function factor()
, in this case it will simply put the whole expression with the same common denominator:
syms x,s
x = 1+1/s
res = factor(x)
and
res =
s + 1
─────
s
add a comment |
You can use the function factor()
, in this case it will simply put the whole expression with the same common denominator:
syms x,s
x = 1+1/s
res = factor(x)
and
res =
s + 1
─────
s
You can use the function factor()
, in this case it will simply put the whole expression with the same common denominator:
syms x,s
x = 1+1/s
res = factor(x)
and
res =
s + 1
─────
s
answered Nov 28 '18 at 9:11
obchardonobchardon
4,0441821
4,0441821
add a comment |
add a comment |
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I guess that you mean
(s+1)/s
and not(s^2+1)/s
. You can use the functionfactor
.– obchardon
Nov 28 '18 at 9:06