ddxtan-12x1-x2=?

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{2 x}{1 - x^{2}}$

$\frac{2}{1 + x^{2}}$

$2$

$\frac{1 - x^{2}}{1 + x^{2}}$

ঢাকা বোর্ড - HSC2021উচ্চতর গণিতAll Combined Chapter

লগইন করুন

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

ddxtan-12x1-x2=?

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$

$\frac{d}{d x} (\tan^{- 1} \frac{2 x}{1 - x^{2}}) = ?$