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Which of the following is the negation of the proposition "\(\exists x \in \mathbb{R}, x^2 = -1\)"?
\(\exists x \in \mathbb{R}, x^2 \neq -1\)
\(\exists x \in \mathbb{R}, x^2 > -1\)
\(\forall x \in \mathbb{R}, x^2 = -1\)
\(\forall x \in \mathbb{R}, x^2 \neq -1\)
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