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sqrt(x) function is not faster than the apparent equivalent pow(x,0.5).

  • A.true
  • B.false

Answer: B

Correct answer: false

sqrt(x) is faster - often much faster - than pow(x, 0.5). Square root is a single hardware instruction on most processors, whereas pow is a general routine computing an exponential and a logarithm. It is also more accurate, so sqrt should always be preferred.

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