Solve d / wrt x ∫ _ { x ^ 2}^x^31/sqrt{1+t^4}dt

$$\frac { d } { d x } \int _ { x ^ { 2 } } ^ { x ^ { 3 } } \frac { 1 } { \sqrt { 1 + t ^ { 4 } } } d t$$

Evaluate

$$\frac{x\left(-2\sqrt{x^{12}+1}+3x\sqrt{x^{8}+1}\right)}{\sqrt{\left(x^{8}+1\right)\left(x^{12}+1\right)}}$$

Differentiate w.r.t. x

$$\frac{2\left(\left(3x^{8}-1\right)\left(x^{12}+1\right)^{\frac{3}{2}}+3x\left(x^{8}+1\right)^{\frac{3}{2}}\left(x^{4}\left(-x^{4}-1\right)\left(2x^{4}-1\right)+x^{8}-x^{4}+1\right)\right)}{\left(\left(x^{8}+1\right)\left(x^{12}+1\right)\right)^{\frac{3}{2}}}$$