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Question Number 105300 by bobhans last updated on 27/Jul/20

what is the absolute speed of A that  moves via y = (1/(1+x)) (upper part) when  it crosses y −axis meanwhile B  moves at constant speed of 1 the  x−axis ?

$${what}\:{is}\:{the}\:{absolute}\:{speed}\:{of}\:{A}\:{that} \\ $$$${moves}\:{via}\:{y}\:=\:\frac{\mathrm{1}}{\mathrm{1}+{x}}\:\left({upper}\:{part}\right)\:{when} \\ $$$${it}\:{crosses}\:{y}\:−{axis}\:{meanwhile}\:{B} \\ $$$${moves}\:{at}\:{constant}\:{speed}\:{of}\:\mathrm{1}\:{the} \\ $$$${x}−{axis}\:? \\ $$

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