Hello Sir,
def symmetry(w):
if(w==w(x=-x,y=-y)):
print "symmetrical about origin"
else:
print "not symmetrical about origin"
if(w==w(x=-x)):
print "symmetrical about y axis"
else:
print "not symmetrical about y axis"
if(w==w(y=-y)):
print "symmetrical about x axis"
else:
print "not symmetrical about x axis"
if(w==w(x=y,y=x)):
print "symmetrical about y=x line"
else:
print "not symmetrical about y=x line"
var('x y a')
w=x^2+y^2-a^2
html("<h2>Find the symmetry of a curve </h2>")
symmetry(w)
this is our function symmetry. We had included this into our sage test copy but
when we try to call it from sage command prompt then it gives error that
"global variable x is not defined" how to resolve this problem ??????/
plz reply asap. We need it very urgent.
Thanks
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