Practice problem
For which values of xxx is the following inequality true? 2x+1≥4x2^{x+1} \ge 4^x2x+1≥4x
x∈[1,∞)x \in [1, \infty)x∈[1,∞)
x∈(−∞,1]x \in (-\infty, 1]x∈(−∞,1]
x∈[0,1]x \in [0, 1]x∈[0,1]
This inequality is never true.
This inequality is always true.
Type a concept, like “slope” or “photosynthesis”.