Dx is a 2 letter English word.
You can make 7 anagrams from letters in DX (dx).
The writer considers as very doubtful the formula for Dx, which is the same as that for W1, already discussed.
At last he impatiently remarked, "Does nobody know that Dx ⁄ dt means velocity?"
"I felt an immediate overload of power in my Dx circuit," the servo-pilot confessed.
The simplest possible case is, therefore, that in which ds is the square root of a quadratic function of the Dx.
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