# What is it?

Calculus Level 3

$$\int _{ 0 }^{ 1 }{ \left| x \right| \left| 1-x \right| dx}$$

can be expressed as the form $$\frac { a }{ b }$$ where $$a$$ and $$b$$ are co-prime integers what is the the value of $$a+b$$.

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