Question

Which is a counterexample that disproves the conjecture?

A student concludes that if x is a real number, then x ≥ x^3.

A. x = 3
B. x = 1
C. x = 0
D. x = -1

Answer 1

I'm confused again! :(

Answer 2

you want x to be smaller than x^3.

so for each of the numbers, you want to calculate x^3 and then compare it to x.

expample: (-2)^3 = -8

-2 > -8
x > x^3