DLMF:4.45.E8 (Q2014): Difference between revisions

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0 < x < 0 𝑥 {\displaystyle{\displaystyle 0<x<\infty}}

0<x<\infty
Property / constraint: 0 < x < 0 𝑥 {\displaystyle{\displaystyle 0<x<\infty}} / rank
 
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Revision as of 16:04, 30 December 2019

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DLMF:4.45.E8
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    2 arctan x 1 + ( 1 + x 2 ) 1 / 2 = arctan x , 2 𝑥 1 superscript 1 superscript 𝑥 2 1 2 𝑥 {\displaystyle{\displaystyle 2\operatorname{arctan}\frac{x}{1+(1+x^{2})^{1/2}}% =\operatorname{arctan}x,}}
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    0 < x < 0 𝑥 {\displaystyle{\displaystyle 0<x<\infty}}
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