533.sagews

1+1

2

1+1

2

2+3

5

a=3;

a+2

5

pi

pi

pi.n(digits=30)

3.14159265358979323846264338328

3*pi

3*pi

g(x)=sqrt(x)
f(x)=2/7*(2*sin(pi*x/7)^2+2*sin(2*pi*x/7)^2+2*sin(3*pi*x/7)^2)
P=plot(g(x),0,7)
P.show().save(test.png)

Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/sage/sagenb/sage_notebook/worksheets/bandobras/0/code/15.py", line 10, in <module> exec compile(ur'P.show().save(test.png)' + '\n', '', 'single') File "/home/sage/sage_install/sage-a/local/lib/python2.5/site-packages/SQLAlchemy-0.4.6-py2.5.egg/", line 1, in <module> AttributeError: 'NoneType' object has no attribute 'save'

f(x,y)=y^2*sin(x)*cos(y)^2/x
P=plot3d(f(x,y),[50,150],[50,150])
P.show()

/home/sage/sage_install/sage/local/lib/python2.5/site-packages/sage/plot/plot3d/plot3d.py:177: DeprecationWarning: Substitution using function-call syntax and unnamed arguments is deprecated and will be removed from a future release of Sage; you can use named arguments instead, like EXPR(x=..., y=...) f_list, (u,v) = parametric_plot3d.adapt_to_callable([f], 2)