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If y=(sqrt(a^2+x^2)+sqrt(a^2-x^2))/(sqr...

If `y=(sqrt(a^2+x^2)+sqrt(a^2-x^2))/(sqrt(a^2+x^2)-sqrt(a^2-x^2)),s howt h a t(dy)/(dx)=(2a^2)/(x^3){a+(a^2)/(sqrt(a^4-x^4))}dot`

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