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how to solve piecewise equations with integration using comsol?

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Hello everyone,
I am a new comsol user, recently I have meet a problem and don't know how to solve it.
The equation are as follow:

X=0, when V<0.5;
d(X,t)=V,when V>=0.5;
V=sin(2*pi*t);

I don't know how to solve these equations using comsol, can anyone give me some sugesstions?
Thank you for your reading my posts and I am looking forward to reply.

0 Replies Last Post 14.12.2013, 05:14 GMT-5
COMSOL Moderator

Hello Liu Zhifeng

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