यदि y = \(\rm \tan^{-1}\left[ \frac{8x}{1-15x^2} \right ]\) है, तो \(\rm \frac{dy}{dx}\) ज्ञात कीजिए। 

1
\(\rm \frac{5}{1+25x^2}-\frac{3}{1+9x^2}\)
2
\(\rm \frac{5}{1+25x^2}+\frac{3}{1+9x^2}\)
3
\(\rm \frac{8}{1+25x^2}\)
4
इनमें से कोई नहीं 

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