4006.sagews

solve([6-2*x-2*3==3+x],x)

[x == -1]

solve([-5*x>20],x)

[[x < -4]]

solve([5+x<-3],x)

[[x < -8]]

def f(x):
    return 3 - 2*x^2
f(100)

-19997

var('A x') solve([A==2+x],x)

Traceback (most recent call last): File "<stdin>", line 1, in <module> File "_sage_input_12.py", line 10, in <module> exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("dmFyKCdBIHgnKSBzb2x2ZShbQT09Mit4XSx4KQ=="),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))' + '\n', '', 'single') File "", line 1, in <module> File "/tmp/tmp1KtWFy/___code___.py", line 3 var('A x') solve([A==_sage_const_2 +x],x) ^ SyntaxError: invalid syntax