Practice problem
If f(x)=1xf(x) = \frac{1}{x}f(x)=x1, what is f(f(x))f(f(x))f(f(x))?
2x\frac{2}{x}x2
xxx
1x\frac{1}{x}x1
Undefined
Type a concept, like “slope” or “photosynthesis”.