Revision history [back]
 | 1 | initial version |
Building on @Emmanuel Charpentier's answer.
Below:
- result when e is as when Sage starts
- result when e is a symbolic variable
- how to restore the initial value of e
With e as when Sage starts, no unsimplified log(e):
sage: log(e)
1
sage: f(x) = e^x*cos(x)
sage: f_int(x) = integrate(f, x)
sage: f_int(x)
1/2*(cos(x) + sin(x))*e^x
With e redefined as a symbolic variable, log(e) stays log(e):
sage: e = SR.var('e')
sage: log(e)
log(e)
sage: f(x) = e^x*cos(x)
sage: f_int(x) = integrate(f,x)
sage: f_int(x)
(e^x*cos(x)*log(e) + e^x*sin(x))/(log(e)^2 + 1)
To reset e to its default value, use either:
sage: reset('e')
or
sage: e = sage.symbolic.constants.e
or
sage: from sage.symbolic.constants import e
To figure out what import statement to use above, run this in a fresh Sage session:
sage: import_statements(e)
from sage.symbolic.constants import e
| | 2 | No.2 Revision |
Building on @Emmanuel Charpentier's answer.
Below:
- Below:
- result when
eis as when Sagestarts -starts - result when
eis a symbolicvariable -variable - how to restore the initial value of
e
With e as when Sage starts, no unsimplified log(e):
sage: log(e)
1
sage: f(x) = e^x*cos(x)
sage: f_int(x) = integrate(f, x)
sage: f_int(x)
1/2*(cos(x) + sin(x))*e^x
With e redefined as a symbolic variable, log(e) stays log(e):
sage: e = SR.var('e')
sage: log(e)
log(e)
sage: f(x) = e^x*cos(x)
sage: f_int(x) = integrate(f,x)
sage: f_int(x)
(e^x*cos(x)*log(e) + e^x*sin(x))/(log(e)^2 + 1)
To reset e to its default value, use either:
sage: reset('e')
or
sage: e = sage.symbolic.constants.e
or
sage: from sage.symbolic.constants import e
To figure out what import statement to use above, run this in a fresh Sage session:
sage: import_statements(e)
from sage.symbolic.constants import e
