Hi: (a) I'm not sure if this is a bug or something missing, but it seems to me it should be easy to plot y=arccsc(x) in SAGE, since it is a basic function of trigonometry and calculus. Two problems: (1) it seems arccsc is not defined, (2) after defining it, it does not seem easy to plot it:
sage: acsc = lambda x: CDF(x,0).arccsc() sage: acsc(1.1) 1.14109666064 sage: acsc(1.9) 0.554261834452 sage: P = plot(RR(acsc(x)),1,2) --------------------------------------------------------------------------- <type 'exceptions.TypeError'> Traceback (most recent call last) /home/wdj/sagestuff/sage-2.8.7.rc1/<ipython console> in <module>() /home/wdj/sagestuff/sage-2.8.7.rc1/<ipython console> in <lambda>(x) /home/wdj/sagestuff/sage-2.8.7.rc1/complex_double.pyx in sage.rings.complex_double.ComplexDoubleField_class.__call__() /home/wdj/sagestuff/sage-2.8.7.rc1/complex_double.pyx in sage.rings.complex_double.ComplexDoubleElement.__init__() <type 'exceptions.TypeError'>: a float is required (b) In fact, what I'd like to do is plot in SAGE what calculus teachers draw frequently on the board: not just one branch of arccsc but rather several of them: ie, the plot of y=csc(x) over say -2\pi to 2*\pi, flipped about the 45^o line. Is this easy to do? - David Joyner Can anyone see what I'm doing wrong here? - David Joyner --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~----------~----~----~----~------~----~------~--~---
