# Figure it out

Calculus Level 4

$$f\left( x \right) ={ \int _{ 0 }^{ \infty }{ \frac { t\cdot dt }{ { \left( t+1 \right) }^{ x } } } }$$

If $$f\left( x \right)$$ is defined when $$x>2$$, which of the following is equivalent to $$f\left( x \right)$$?

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