Question

If f(x) = `1 - 1/"x", "then f"("f"(1/"x"))` ____________.

पर्याय

• `1/"x"`

• `1/(1 + "x")`

• `"x"/("x" - 1)`

• `1/("x" - 1)`

Answer 1

If f(x) = `1 - 1/"x", "then f"("f"(1/"x"))` `underline("x"/("x" - 1))`.