Selective Question

If a^{-\frac{1}{2} }= x , where a > 0 and x > 0 , which of the following equations gives a in terms of x ?

  1. ×

    a = \dfrac{1}{\sqrt{x} }

  2. ×

    a=\dfrac{1}{x^2}

  3. ×

    a=\sqrt{x}

  4. ×

    a=-x^2

Steven Zheng Steven Zheng posted 1 month ago


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