my ($vorzeichen_a_form,$a_form,$vorzeichen_b_seit,$b_seit,$vorzeichen_c_yab, $c_yab) = ($formel =~ m/y=

(+\-)? #$vorzeichen_a_form
(.+)? #$a_form
x\^2 #x^2
(+\-.+)? #$vorzeichen_b_seit, $b_seit
(+\-.+)? #$vorzeichen_c_yab, $c_yab
$/x);

it should work on these combinations:
y=x^2 #no a, b,c
y=-x^2

y=1x^2 #no b,c
y=-1x^2

y=x^2-2 #no b
y=-1x^2-2
y=1x^2-2

y=x^2-2x #no c
y=-1x^2-2x
y=1x^2-2x

y=x^2-2x-2 #a,b, and c are present
y=-1x^2-2x-2
y=1x^2-2x-2

ofcourse, positive values are possible
and ofcourse my idea doesnt work :(

In reply to Re^2: if var isnt used by metalfan
in thread if var isnt used by metalfan

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