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| Discussions |
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| Hey Marco, that's like magic. Thanks. |
| Wolfram Alpha does look nice inside MMA, I have to admit. However, cells cannot be refreshed off-line. |
| Excellent. One little prefix function makes all the difference. I will update my toolkit accordingly. Thank you. |
| Got it. Thanks for the tip. |
| Thanks Michael, it's nice not to have to worry about that one from now on. |
| Jason, Thanks for the tip. A little experimentation resulted in input that recovered my expected output exactly: Convolve[ E^y UnitStep[y], E^-y UnitStep[y], y, t, Assumptions -> t > 0] The same template worked for the other examples I... |
| Hello Group, This is not a burning issue, but it has me confused. If I enter LaplaceTransform[t, t, s, GenerateConditions -> True] MMA 10.3.1 returns `1/s^2` (with no conditions shown.) If I enter LaplaceTransform[E^(2 t),... |
| Thanks, that's what I needed. |
| Hi All, When copied from another notebook (not mine) the expression calculates. But when I type in a version with the exact same appearance, it doesn't work.[mcode]DSolve[{ff^(0,0,0,1)[r,\[THETA],\[PHI],t]==rhs,ff^(0,0,0,1)[0,0,0,0]==Sin[t]}, ... |
| Hi Group, Wolfram Alpha classifies an ODE before solving it. There is a free Wolfram widget floating around that does the same thing. For instance, if you enter y''+y'+y=cos(x+y) it returns: second-order nonlinear ordinary differential equation ... |