Question

O conjunto solução da inequação (1/2)^x2 > 1
é :

a) ∅

b) (-1, 1)

c) (0, +∞)

d) (-∞, 0)

e) IR​

Answer 1

$\large\boxed{\begin{array}{l}\sf\bigg(\dfrac{1}{2}\bigg)^{x^2}>1\\\sf\bigg(\dfrac{1}{2}\bigg)^{x^2}>\bigg(\dfrac{1}{2}\bigg)^0\\\sf x^2<0\\\sf S=\varnothing\\\sf pois~x^2>0~\forall~x\in\mathbb{R}\end{array}}$