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1 vote
2 answers
414 views

Integration over a (non-parametric) curve defined by indicator function

I want to integrate the real function myFun defined on a 2D plane over the line locus, defined as the solution of a set of ...
Nicola's user avatar
  • 572
2 votes
0 answers
545 views

Integration of UnitStep or HeavisideTheta

I am using Mathematica 9. If I evaluate Integrate[Piecewise[{{1 - r, r > 0 && r < R}}, 0], r] then I get ...
mxmlnkn's user avatar
  • 121
3 votes
2 answers
8k views

Integrating a Simple Piecewise Function

If I define f[x_]:=If[x<0,-1,1] and then integrate,say Integrate[f[x],{x,-3,7}] I get what I expect, namely 4. But ...
WillO's user avatar
  • 328
5 votes
3 answers
504 views

Creating a function with integral zeroes of the 0th, 1st, and 2nd derivatives

I would like to be able to randomly generate functions, each of which satisfies $f : [-10, 10] \rightarrow [-10, 10]$ All the zeroes, critical points, and inflection points have an integral $x$-...
Twiffy's user avatar
  • 369
6 votes
1 answer
941 views

Using Boole to integrate over region

I have a complex and long piecewise function to integrate, so I have written a Mathematica script that cuts the whole range of integration, evaluates the integrand in each region and then integrates ...
Nicola's user avatar
  • 572
6 votes
2 answers
658 views

Using units and piecewise functions in Integrate

For simple cases, Quantities appear to be handled well by Integrate: ...
SWB's user avatar
  • 625
1 vote
1 answer
575 views

How to integrate this cumbersome piece-wise function?

I have this systems of equation: ...
Thanh Son's user avatar
3 votes
3 answers
1k views

Why does the first derivative of a piecewise continuous function have discontinuities?

I have this piecewise continuous function which is also continuously differentiable over time : ...
Meclassic's user avatar
  • 1,035
0 votes
1 answer
238 views

Different expressions for an integral if I split the region of integration

Consider the assumptions ...
Nicola's user avatar
  • 572

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